2020-2021 Frost laws, thaw laws and seasonal weight restrictions.
Frost/thaw damages to surface.
Learn the details of the winter frost laws, spring thaw laws and seasonal weight restrictions. Details for the USA and Canada by State/Province. Many areas incorporate temporary special weight limits and restrictions (frost or thaw laws) during the winter and spring months of the year. These temporary restrictions are usually referred to as “frost laws” or “thaw laws” and implemented typically during the month or March and April. In some Northern States and Provinces frost laws can still be in effect in July as it’s much colder in the North. Since these restrictions are implemented on a “as needed” basis it is possible many of the official government websites may not have published this temporary restriction in a convenient place as frost laws are also subject to change at any moment based on the temperature of the roads core. You want to be certain to check with the appropriate officials to verify the latest changes in the laws.
2020-2021 United States: Restrictions on winter and spring seasonal weight laws.
Why we have these laws and must protect our roads and highways.
In order to keep the trucking industry operating the Northern US states and Canadian provinces rely on engineers and scientific data to determine which dates frost laws will be in effect. With fairly recent advances in science and technology, data is much more reliable. This helps with the implementation of “Frost Laws” or “Seasonal Weight Restrictions” ensuring they are not implemented to early or late. While no State or Province desires to delay the transportation of goods through their territory it is imperative public assets are protected.
In areas that constantly get negative (ie: -10 below zero) temperatures the amount of damages has forced Northern US States as well as Canadian Provinces to create and enact laws that restrict vehicle weights during the spring and winter months (specifically trucking companies) when the roads and bridges are thawing out. There are all kinds of things that can go wrong with different types of roads and pavements. For example the State of Michigan has implemented permanent frost laws that go into effect during the months of March through May (and in some cases even June). Some routes require legal axle weight limits be decreased by as much as 35%. Some areas and local governments may also limit heavy-haul vehicle speeds to a maximum of 35 miles per hour during frost/thaw law months regardless of posted limits.
One of many examples is in Southern Oregon on old US Highway 1 (which follows the coast line from Mexico to Canada) the road is as much as 16 feet thick as years of pavement (even bricks) has been laid down year after year since the early 1900’s. It should be noted that today’s technology is able to provide us with roads that are flexible due to the engineering of the construction process and the materials used. Excessive weight exerted by overloaded axles (or a weakened supporting base) can cause the pavement to bend or deform. The strength of the road combined with its resistance to bending determines the amount of weight the roadway can handle.
Nevada maximum load limits until a trucking permit is required:
Length: 75 feet maximum overall. Maximum trailer length is 53 feet. Width: 8 feet 6 inches. Height: 14 feet. Weight: GVW 80,000 pounds. Single axle 20,000 pounds, tandem axles 34,000 pounds, tridem axles 42,000 pounds. Steer axle maximums require some math obviously. Here’s what the NVDOT says about it: “The maximum weight per tire, measured by pounds per inch of tire width, is 600 pounds per inch for the steering axle and 500 pounds per inch for all other axles, not to exceed the axle rating”. We say good luck with that, 12,400 pounds average??? Overhang: The maximum overhang allowed is 10 feet which overall must NOT exceed the maximum length of 75 feet.
Routine oversize and heavy-haul trucking permits.
These maximum dimensions/weights are considered routine oversize or heavy-haul trucking permits in NV:
Length: There really isn’t any routine maximum length. It all depends on proposed route and the state. After 105 feet in length it can get complicated. Width: 17 feet. However some routes are restricted, see notes below; Height: 16 feet. Weight: Single axles 20,000 pounds, tandem axles 46,725 pounds, tridem axles 58,000 (to 59,000 see below) pounds. Determined by bridge formula, desired route, tire size and axle spacings especially for singles, tandems, tridums and quadem axles. Gross weights are: 5 axles 92,000 pounds with 70 feet minimum axle spacings, 6 axles 96,000 pounds with 70 feet minimum of axle spacings, 7 axles 101,000 pounds with 70 feet minimum of axles spacings, 8 axles 106,000 pounds with 70 feet minimum of axles spacings. Overhang: No more than 15’ combined total but you want to check with them to make absolute sure as routing can effect this limit. Notes: For weight restrictions Nevada has different routes marked. Choose the map you need for the entire state, western, eastern and southern restricted areas. You can also view a list. For purple, orange and green areas. Also, restrictions for width and weight are in effect on the following routes: route map, route list. Also note to get the extra 1,000 pounds as noted above (59,000 pounds on tridem configurations) you are allowed to use up to 2 tridem configurations only. Any additional tridem axle configurations will max out at 51,000 pounds. If you have tridem configurations on your tractor that will be counted as 1 of the 2. However, the distance between the steer axle and the center tridum axle must be a minimum of 18 feet. It is possible to to exceed this within reason but is reviewed case by case by the NVDOT permitting office.
Nevada superloads.
Requirements for extra-heavy or over-dimensional (superloads) in NV:
Nevada is picky about weights and heights. Rather than attempting to illustrate a list of items that may not apply we suggest if your shipment does not fall within the set maximums listed above it’s more than likely going to be considered a superload by NVDOT. The permitting process for superloads is different than the normal oversize or over-weight trucking permits in Nevada and must be fully drafted by the company or person requesting the permit. For instructions for the format your super-load application must be in see: Nevada-superloads.
NOTE: any special purpose or special needs loads that are outside of the normal permitting parameters will classify as a superload.
Legal travel times for oversize and heavy-haul loads.
Travel times and restrictions:
Remember to refer to your actual permit for travel times and restrictions. For Nevada daylight travel hours are defined as one half hour before sunrise to one half hour after sunset with some restrictions; under 12 feet wide, 110 feet long or 15 feet tall may also travel during night hours and on weekends as long as you are not on I-80 between Sparks, NV and the CA state border or on I-15 between Las Vegas and the CA state border. There are no weekday curfews for any cities and if your load is under 12 feet wide, 100 feet long or 15 feet tall you may travel on holiday. However, if your load is in excess of these dimensions holiday travel restrictions are on the following days: New Years day, Memorial day, Independence day, Labor day, Thanksgiving day and Christmas day. If a large event is predicted to create dense traffic they may restrict that date as well, ie: state fairs, etc.
When pilot cars or escort vehicles are required.
Heavy-haul or oversize loads may be required to be accompanied by a escort vehicle or pilot car if:
QUICK REFERENCE
Length:
over 105 feet in length requires on escort. This applies to both 2 lane and 4 lanes roads.
Width:
2 lane roads:
12 feet requires 1 pilot car or escort.
14 feet requires 1 pilot car and 1 escort.
16 feet requires 3 total pilot cars and escort vehicles.
17 feet will require a review which will probably require 1 pilot car and 1 escort and 1 police escort.
4 lane roads:
14 feet requires 1 pilot car or escort.
16 feet requires 1 pilot car and 1 escort.
17 feet requires 1 pilot car and 1 escort and 1 police escort.
Height:
if over 16 feet and 6 inches in height you will be required to have 1 pilot car equipped with a height pole.
DETAILED REFERENCE
Length: If shipment is over 110 feet in length you are required to have 1 pilot car behind the shipment. Width: If your shipment is over 12′ wide on up to a 3 lane road you are required to have 1 escort vehicle in the front of your shipment. If over 14′ wide on up to a 3 lane road you are required to have 1 escort in the front and 1 pilot car in the rear of the load. If over 14′ wide on a 4 lane road you are required to have 1 rear escort. If over 16′ you are required to have 1 front pilot car and 1 rear escort on 4 lane and all other roads. Height: Loads that are in excess of 15′ 6″ are required to have a front high pole pilot car at all times. Weight: Pilot cars and escorts are usually not required on shipments over weight that are able to maintain the minimum posted speed requirements. If you are not able to maintain minimum speeds you will be required to have a minimum of a rear escort vehicle if travelling in urban and some rural areas. Overhang: If in excess of 25 feet you will be required to have a minimum of 1 pilot car. Notes: Some routes are completely restricot car.ted. If in the Hoover dam vicinity shipments are not permitted for anything over 10 feet in width but if 10 feet will require 1 pilot car and 1 escort.
Pilot car and escort vehicle requirements, certifications.
In order to operate a pilot car or escort vehicle in the state of Nevada you are required to have a minimum of the following:
First of all the state of Nevada requires that all pilot and escort vehicles be certified. If you are officially certified by another state then this is recognized by the state of Nevada as valid certification and you may operate within the state however, in order to have an amber light mounted to ANY vehicle you must first obtain a permit from the state which costs $2.00 per vehicle, per year. You can do that online by clicking here.
A pilot car or an escort vehicle is required to be equipped with a strobing or flashing amber light that is visible from a distance of no less than 500′ in daylight and from all 360 degree angles, mounted to the roof and above signs. The light must be a minimum of 50 candle power and if it is a rotating light must have a lens of no less than 5″ in diameter with a flash count or not less than 50 per minute. Any vehicle used for this purpose must be no less than 60″ in width, with a wheelbase of a minimum of 95″ with no more than 2 axles and a manufacturer’s gross weight of no more than 16,000 pounds.
Each vehicle must be equipped with a two way radio that is in constant contact with/to all parties involved in the shipment, 5 pound (minimum) fire extinguisher, 3 bi-directional 18″ road triangles, 1 stop/slow sign with 5′ pole handle, 1 hard hat, 1 reflective safety vest, a copy of the ANSI/ISEA manual which can be ordered online here for $30. Drivers must be a minimum of 18 years of age, have a valid drivers license, and must be flagger/flagman “capable or carrying out flagging responsibilities” (we strongly suggest a flagger safety class) of controlling traffic, wearing a approved safety yellow-green safety jacket or vest and equipped with a red flag and a stop/slow paddle of no less than 18″. Each vehicle should be equipped with proper signs that specify “oversize”, “oversize load” or “wideload” as well as “long load” with black letters a minimum of 10″ in height with a letter thickness of no less than 1 5/8″ on a yellow background which are removed or covered while not in work transit mode. Pilot car and escort vehicles must have a placard on each side of the vehicle with the companies name and phone number clearly visible from a distance of no less than 50′.
Operators of pilot cars and escort vehicles will maintain a reasonable distance from the shipment which all depends on weather, traffic, road conditions and the speed you are travelling with reasonable distance defined by how much time it takes for the shipment driver to recognize your indications to stop, slow or pass as necessary.
Shipment, truck and trailer markings.
Truck, trailer and shipment required signs, banners and flags:
All trucking companies that are hauling oversize and overweight shipments must have a amber colored strobing or flashing light affixed to the top of the tractor trailer cab that is visible 360 degrees from a minimum distance of 500′. Signs that state the nature of the shipment; “oversize load” or “wideload” signs in the overall front and rear of the shipment. Signs will be no less than 7′ in width and 18″ in height with black lettering no less than 10″ in height with a lettering thickness of no less than 1 5/8″ thick on a yellow background. Signs must be mounted securely and free of any dirt or debris. Warning flags are to be used only in daylight hours and must be florescent orange in color with a minimum size distance of 18″ from one corner to the next corner and be placed at the outer most corners of the shipment as well as on any protrusions. IF the shipment is permitted to travel during night hours must have 2 constant display amber lights placed at the very most front extreme of the shipment, two amber steady burning lights on the outer (side) center of the shipment and two red steady lit lights on the outer most rear of the shipment. THIS INCLUDES OVER-WEIGHT LOADS MOVING AT NIGHT.
Frost laws and restrictions for Nevada state.
Frost and thaw laws for Nevada:
Nevada is fairly elusive on frost and thaw law travel restrictions. They do provide a map but there is not much detail on it as far as the exact roads that must be travelled. You can view the frost law map or view this thaw law material published by the state DOT which does reference it as well. Then they also have some basic shipment route information that references it as well for the state of Nevada.
Nevada DOT and permit contact information.
Physical address and contact information:
Nevada Department of Transportation
1263 South Stewart Street. Room 102
Carson City, NV 89712
Telephone help line: 775-888-7410 or 800-552-2127
Permit office hours: 7:30 AM – 4:45 PM (no permits after 4 PM) Pacific Time Zone
E-mail: overdimensionalpermitsoffice@dot.state.nv.us
Battle Mountain, Beatty, Blue Diamond, Boulder City, Bunkerville, Caliente, Cal-Nev-Ari, Carlin, Carson City, Cold Springs, Dayton, Elko, Ely, Enterprise, Fallon, Fallon Station, Fernley, Gabbs, Gardnerville, Gardnerville Ranchos, Gerlach-Empire, Goodsprings, Hawthorne, Henderson, Incline Village-Crystal Bay, Indian Hills, Indian Springs, Johnson Lane, Kingsbury, Las Vegas, Laughlin, Lemmon Valley-Golden Valley, Lovelock, McDermitt, McGill, Mesquite, Minden, Moapa Town, Moapa Valley, Mount Charleston, Nellis AFB, Nixon, North Las Vegas, Overton, Owyhee, Pahrump, Paradise, Reno, Sandy Valley, Schurz, Searchlight, Silver Springs, Smith Valley, Spanish Springs, Sparks, Spring Creek, Spring Valley, Stateline, Summerlin South, Sunrise Manor, Sun Valley, Sutcliffe, Tonopah, Verdi-Mogul, Wadsworth, Wells, West Wendover, Whitney, Winchester, Winnemucca, Yerington, Zephyr Cove-Round Hill Village.
The information contained in these pages is research information primarily for use by oversize and overweight trucking company drivers, dispatchers and pilot car companies. While every effort is put into maintaining the accuracy of this information you must absolutely verify this information with the Nevada State DOT Permits office before commencing movement.
According to the Ministry of Transportation, spring thaw restrictions are:
Official and target dates for 2020
As of April 26th the last updates were:
Zone 1 (official dates)
From Monday, March 25 (00:01) to Friday, May 24 (23:59)
Zone 2 (official dates)
From Monday, April 1 (00:01) to Friday, May 31 (23:59)
Zone 3
From Monday, April 15 (00: 01) to Friday, June 14 (23:59)
Please note that the target dates represent the most likely start and end dates of the thaw period for each of the three zones. Depending on the changes in weather conditions, these dates may be moved ahead or postponed.
2020 Manitoba DOT shipping laws, regulations, rules and limitations, for oversize and heavy-haul the trucking over the roads and highways of Manitoba Canada.
Please share your expertise of knowledge with our other visitors below.
Trucking & pilot car directory.
Locate trucking companies and pilot car companies in Manitoba, Canada.
Length: The overall maximum length without a permit is 23 meters. Width: The maximum width allowed without a permit is 2.6 meters. Height: 4.15 meters is the maximum height allowed by Manitoba DOT without a permit. Weight: 9,100 kg on steer (seems high to us so NOT a confirmed number – use reference link below), tandem axles: 17,000 kgs, tridem: 17,000 kgs, or 3 axle combination with proper spacing of a 23,700, quadem: 31,600 kgs, 5 axle: 39,500 kgs and 6 axles: 46,500 kgs. Let me refer you to our reference on this for clarification from Manitoba DOT as there are different weight classes. Overhang: Our researchers are unable to find any information on maximum allowed legal overhang. We did find the pilot car requirements of 25 meters. We will call and update at a later time or you can call Debra Martin at: 204-326-8292 M-F 8-4 – if you do please comment below as this author is writing on a Sat. and they are closed. Thank you!
Routine oversize and heavy haul trucking permits.
Oversize and overweight trucking permits that are issued routinely by Manitoba province:
Length: 30 meters on length is about all you are going to get. Width: 5 meters wide for routine permits depending on routing. Height: Depending on routing as Manitoba DOT has designated routes the maximum height is 4.8 meters. Weight: We were unable to get a solid figure. Manitoba DOT has different zones for weight restrictions so it all depends on which zone you need to travel in. See Manitoba DOT zone map. Overhang: Based on the comment they made on 25 meters of rear overhang we are going to say that up to this amount is routine. If you need to speak to them call the number located above in “legal load limits” in the “overhang” section.
Superload information.
Manitoba DOT information on suplerloads or extra ordinary loads:
We will do more research on superloads in Manitoba in the future. The Manitoba DOT documentation does not cover or mention much about them so we will need to speak with someone on the phone. We are able to see that they are well versed in shipping superloads as they mention in their online documentation that there will make arrangements to remove road side signs and replace them for shipments that are in excess of the road width. We will get back to this section soon but in the meantime appreciate any comments you may be able to leave for other visitors below.
Permitted travel times for oversize and heavy-haul loads – restrictions.
Manitoba DOT permitted travel times and restrictions:
Daylight travel times are defined as from sunrise to sunset in Manitoba. No travel is permitted after 3 PM on Fridays during the summer months for shipments in excess of 3.4 meters (11′ 2″) wide on seasonal restricted roads. In the spring shipments in excess of 4.6 meters (15′) in width are not allowed to travel on roads during the spring restriction times. On routes that are not seasonally restricted you may proceed (multiple lane roads) until 3 PM as long as you are no wider than 3.7 meters in width (12′ 2″) on Friday and resume travel on Saturday at sunrise however if you are in excess of 25 meters in length (82′) you are not permitted to travel after 3 PM on Fridays during the summer months if you are on a seasonally restricted highway and resume on Saturday at sunrise – you are allowed however to travel on holidays. Sunday travel is permitted for loads up to 3.85 meters (12′ 7″) in width on all roads that have no seasonal restrictions. On a single lane highway on holidays you can not exceed 3.4 meters (11′ 2″) in order to travel. On multiple lane roads you can travel only if you are less than 3.7 meters (12′ 2″). This is very confusing so always refer to your permit for final verification but to help the matter lets go over the restricted routes:
Highway 1 from Falcon lake to the Manitoba/Ontario border.
Highway 6, 8, 9, 15, 16, 44, 307, 313, 317.
Highway 10 from the US border to Riding Mountain National Park.
Highway 11 but only north of highway 44.
Highway 12 but only north of highway 15.
Highway 59 from the west boundary line of Brokenhead to Grand Beach and the South perimeter of St. Malo
Here is the Manitoba link for spring road restrictions with zones to help you with interpretation. Holidays observed are: New years day, Provincial day, Good Friday, Victoria day, Canada day, Family day, Labor day, Thanksgiving day, Remembrance day, Christmas day and on Boxing day.
When pilot cars are required.
Manitoba DOT requires you to have a pilot car if your shipment is in excess of any of the following regulated limits:
Length: Shipments that are in excess of 30 meters (98′ 5″) long require 1 pilot car/escort vehicle on the rear of the shipment on all roads. For shipments that include a booster of a jeep that are over 31 meters (101′ 9″) you are required to have 1 rear pilot car vehicle on all roads. Width: If your shipment is in excess of 4.6 meters (15′) wide then you are required to have 1 front pilot car on single lane roads and 1 rear pilot car/escort on multiple lane roads. If your load is in excess of 3.66 meters (12′) but less than 4.55 meters ( 14′ 7″) then you are permitted to travel at night as long as you have 1 front and 1 read pilot car/escort vehicle on all roads and highways. Mobile homes can travel at night on multiple lane roads as long as it does not exceed 5 meters wide (16′ 4″) but are required to have 1 pilot car on the rear. Height: If you are approved for a shipment that is over the legal limits Manitoba DOT has designated routes and you are not required to have a pilot car. Weight: As long as your shipment is able to maintain the minimum speed requirements you will more than likely not be required to have a pilot car as long as your shipment is overweight only. Overhang: Overhang is approved on a case by case basis. Check with the Manitoba DOT for further information to see if your shipment will require a pilot car due to excessive overhang.
Pilot car certifications.
Manitoba DOT certifications and requirements of pilot cars (escort vehicles):
Pilot car/escort vehicle operators are required to take a Manitoba DOT certification course in order to operate in this province. The certification program is recognized by all US jurisdictions that require PEVO except for New York state. Your vehicle is required to have a lighted sign box that is a minimum of 180 cm x 35 cm x 10 cm (72″ x 14″ x 4″), 2 – 175 mm (7″) diameter flashing lights mounted on the top of the sign box on each side with 2 amber strobing or rotating lights a minimum of 203 mm (8″) mounted between the flashing lights on top of the box as well. The sign box must light up and be visible from a minimum distance of 200 meters (656′). The sign box must have either a red and white D sign or a yellow with black lettering stating “OVERSIZE LOAD”, “WIDE LOAD”, OR “LONG LOAD”. If you have the “D” sign your letter must be no less than 20 cm (8″) in height with a 4 cm (1 5/8″) line thickness. If you have the yellow sign your lettering must be no less than 20 cm (8″) with a 4 cm (1 5/8″) line thickness. The sign box must be mounted on the top of the vehicle and covered when not in operation. You are also expected to have the following items inside of the vehicle: CB radio or high powered 2-way radio, first aid kit, fire extinguisher type A, B & C of at least a 2 liters, 3 reflective road triangles, 3 traffic cones, reflective vest (worn while working), slow/stop sign, 3 red or orange safety colored flags no less than 40 x 40 cm (16″ x 16″), nose cone flashlight and a hard hat.
To operate in Manitoba you must obtain a light permit. More information is available by calling: 204-985-0920
Shipment, truck and trailer markings.
Truck, trailer and shipment required signs, banners and flags in Manitoba:
All trucks that are hauling oversize or overweight loads must have a strobing, flashing or rotating amber light mounted to the roof that is visible from 360 degrees at a minimum distance of 200 meters (656′). All 4 outermost corners corners of the overall shipment and any obtrusive points must have flags mounted to them that are safety red or orange in color no less than 40 cm x 40 cm (16″ x 16″) and have the flags exchanged for lighting if moving during the night. A sign stating the nature of the load; “OVERSIZE LOAD”, “WIDE LOAD” or “LONG LOAD” must be mounted to the front and rear of the overall shipment. Signs must be a minimum of 12′ in height and 6′ in width with a yellow background and black letting with lettering thickness no less than 4 cm (1 5/8″) thick.
Manitoba DOT contact and other information.
Manitoba DOT contact and other information:
Manitoba DOT – Central Permit Office Telephone help line, Winnipeg; 877-812-0009 or 204-945-3961 (compliance: 204-945-3890) Fax line: 204-945-3961 Hours of service: 7:30 AM until 6 PM Monday thru Friday – CENTRAL TIME ZONE.
Manitoba DOT oversize and overweight trucking permits website.
Manitoba spring thaw road restrictions information.
Manitoba DOT axle and axle group weight definitions and restrictions.
Manitoba province current road conditions and closure information.
The information contained in these pages is research information primarily for use by oversize and overweight trucking company drivers, dispatchers and pilot car companies. While every effort is put into maintaining the accuracy of this information you must absolutely verify this information with the Manitoba Province DOT Permits office before commencing movement.
Saskatchewan maximum load limits until a trucking permit is required.
Legal Loads: Length: 75 feet (22.86 meters) overall long. Trailer length maximum is 53 feet (16.1544 meters). Width: 8 feet 6 inches wide (2.5908 meters). Height: 13 feet 6 inches (4.1148 meters) tall. Weight: 12,100 pounds (5488.4677 kilograms) on steer axle, 20,200 pounds (9162.5659 kilograms) on a single axle, 37,400 pounds (16964.355 kilograms) on tridem axles. Overhang: Kingpin settings and trailer wheelbase positions are important. Call to clarify.
Routine oversize and heavy-haul trucking permits.
These maximum dimensions/weights are considered routine oversize or heavy-haul trucking permits in SK.
Length: Since Saskatchewan Province has no said length restrictions your overall length approval will depend on your proposed route. Width: No set maximums, depends on routing. Height: No set maximums, depends on routing. Weight: Saskatchewan is tough. No single axles numbers, 48,000 pounds (21772.434 kilograms) on tandem axles, 72,000 pounds (32658.651 kilograms) on tridem axles, if you are over 60,000 pounds (27215.542 kilograms) on tridem axles prepare for a bridge survey as it will probably be required.. Overhang: No set limits, depends on routing.
Saskatchewan superloads.
Requirements for extra heavy or extra legal/dimensional (superloads) in SK.
Typically so we’re not publishing too much information a superload is defined by Saskatchewan Province as any shipment with weights and dimensions that exceed those published above in “Routine Permits”. There are exceptions but everything depends on proposed routing and road/weather conditions and if frost laws are in effect.
Required flags and markers for oversize/heavy-haul shipments loaded onto truck trailers.
Know how to mark your load and what signs are required by your permit.
Lights, flags and markers:
If over 120.078 inches wide (3.05 meters) you will need amber lights for night running and flags for daytime travel. A WIDELOAD or “D” sign is required for all wideloads over 120.078 inches wide (3.05 meters) however a “OVERSIZE LOAD” banner is NOT allowed. If you are moving at night any required banners must be illuminated with additional amber light in the center of the rear. If over 10′ 9″ (3.2766 meters) wide the cab of the tractor must be mounted with an amber light. If over 82 feet (24.9966 meters) long you MUST have a “D” sign or LONG LOAD banner mounted on the rear. If not transporting a load you must cover ANY signs.
NOTES: Lift axles are not permitted. Flip axles can be used if trailer king pin to center distance is is less than 45′ 5″, the trailer is no longer than 53′ and the load is classified as NON DIVISIBLE. A tractor wheelbase from the center of the steer axle to the center of the drive axle can not measure over 244″ unless you permit the load with a longer wheelbase AND IF they approve it. This only applies to oversize permits and overweight will not be eligible. A tridem drive tractor is NOT recognized by the Province of Saskatchewan except for moves that are large and NON DIVISIBLE, IF a tridem drive tractor IS allowed it MUST have a wheel base of no less than 260″ and no greater than 268″. A spread axles trailer that has axles spacings of greater than 6′ is considered a single axle for weight calculations and is not allowed to carry more than a combined total weight of 20,000 pounds or 10,000 pounds per axle. EXCEPT when in the case of when the object being shipped is NOT over 37,500 pounds loaded on the spread. Please leave Saskatchewan experiences below. This is a tough Province to get solid numbers out of and our viewers can use your experience to help them.
Will your shipment be delayed do to frost and thaw law restrictions?
Frost and thaw laws constantly change due to weather conditions in Saskatchewan. Find out if there in effect:
Saskatchewan Province does have spring weight restrictions and the roads and highways are dependent on conditions. These restrictions usually apply to all secondary roads and not main highways. Overall weight reductions may be imposed in some areas. Check with Saskatchewan Province permit office for clarification.
Saskatchewan travel times and restrictions.
Make certain you don’t ship oversize or heavy-haul loads during restricted movement hours:
Travel times and restrictions:
Holiday restrictions vary, contact SGI permit office to see if you can travel or not. Daytime travel only for loads over 82′ in length, 12′ 2″ in width and 16′ in height. No movement is allowed on Friday after 3:00 pm from July 1 until Labor day. Night time travel is permitted if under the above maximums but must have amber lights on all 4 outer most corners and reflective sign on rear indicating OVERSIZE or LONG LOAD.
When pilot cars or escort vehicles are required.
Heavy-haul or oversize loads may be required to be accompanied by a escort vehicle or pilot car if:
Length: If load is over 98′ on 2 lanes 1 rear pilot car (escort) is required. If over 118′ in length 1 front and 2 rear pilot car (escort vehicle) is required. Width: If a load goes beyond the center line of the road then 1 front escort is required. If over 16′ 4″ wide you will be required to have 1 front and 1 rear escort. Height: Up to the permit office depending on route. If over 17′ 2″ in height you will be required to have a bucket truck travel with you. Weight: For over weight shipments it looks like an escort vehicle will not be required. Overhang: Case by case basis. Contact permit office for clarification.
Pilot car and escort vehicle requirements.
Pilot car or escort vehicle mandatory operator certifications and vehicle requirements:
All pilot cars/escort vehicles must display a bumper or roof mounted “OVERSIZE LOAD” sign visible from both the front and rear of the vehicle. Sign must be at least 5′ long and 12″ in height, yellow in color with black letters no less than 10″ tall and 1 1/2″ in width. Vehicle must have 2 safety flags red or orange in color and be a minimum of 18″ of length and/or height mounted at a 40 to 70 degree angle on all 4 corners of the vehicle. Company identification signs must be placed on both sides of the pilot car (escort vehicle) displaying the name of the company, phone number and be placed on both the left and right hand sides of the vehicle. These signs must be no less that 8″ tall x 12″ wide and identity writing must be plainly legible. Vehicle must be equipped with a horizontally mounted rotating (or strobe) amber colored flashing light which must be visible from a 360 degree angle from a minimum of 500 feet. Vehicles must be equipped with a CB radio or 2-way communication device, 2 – 5 pound fire extinguishers type A, B and C, a sign with the word “STOP” on one side and “SLOW” on the other with dimensions of no less than 18″ in diameter with a minimum of 6″ letters. A red safety colored flag with handle no less than 18″ square, 3 reflective emergency road triangles or 18″ traffic cones, 2 OVERSIZE LOAD banners (yellow with black lettering) and a safety colored (red, orange, yellow or lime green) vest, jacket or shirt (used while directing traffic).
Email: CarrierSafetyPrograms@sgi.sk.ca Help telephone line: 306-775-6969 or 800-665-7575 Fax: 306-775-6909 Hours: Monday – Friday 8:30 am – 4:30 pm Central Time Zone.
Estevan, Flin Fon, Humboldt, Lloyminster, Martensville, Madow Lake, Melfort, Melville, Moose Jaw, North Battlefield, Prince Albert, Regina, Saskatoon, Swift Current, Warman, Weyburn, Yorkton.
The information contained in these pages is research information primarily for use by oversize and overweight trucking company drivers, dispatchers and pilot car companies. While every effort is put into maintaining the accuracy of this information you must absolutely verify this information with the Saskatchewan Province DOT Permits office before commencing movement.
Length: 69 feet combined overall and the maximum length of your trailer can not exceed 48 feet. Width: 8 feet and 6 inches in the maximum width allowed by Maine DOT. Height: 14 feet is the maximum height allowed to travel in Maine legally. Weight: 80,000 pounds GVW is the maximum weight allowed without a permit.
Routine trucking permits.
Oversize and overweight trucking permits that are routinely issued by the Maine state DOT office:
Length: 125 feet in length is the maximum for a routine trucking permit. Width: 16 feet wide is the maximum for a routine permit and anything wider than this will require a police escort. If over 18 feet wide you will not be allowed to travel on the turnpike. Height: 16 feet high in the most on a routine permit (13 feet and 6 inches is the limit on the Maine turnpike) and this depends on your routing. If you are close to this or over you will possibly have to have a route survey done and you will be required to notify all utility companies that have obstructions along your route. Weight: Tandem axles: 52,000 pounds, tridum axles: 75,000 pounds, quadem axles: 100,000 pounds. Gross weight for 5 axles is: 130,000 pounds, for 6 axles: 140,000 pounds, and for 7 axles is the maximum gross weight allowed is: 167,000 pounds maximum.
Maine DOT superload information:
Anything that is over 125 feet long, 16 feet wide, 16 feet tall or over 125,000 pounds in weight is considered a superload by the Maine DOT. Permit approval could take 30 days depending on your proposed route and how far you want to exceed legal limits. You may wish to see: Maine state oversize and heavy haul trucking laws.
Permitted travel times and restrictions.
Maine DOT permitted travel times and travel restrictions:
One 1/2 before and 1/2 hour after sunset rule applies. With the exception of during the months of July and August you may travel on Saturdays and Sundays but may not during these 2 months. There is no holiday travel on the following holidays: New Years day, Memorial day, Independence day, Labor day, Columbus day, Veterans day, Thanksgiving day, Black Friday and on Christmas day.
NOTES: Turnpike travel: you may travel on the Maine turnpike during the daylight hours from Monday until Friday at 12 noon. You may not travel on the weekends. Max width if 14 feet 6 inches and for height see “Routine permits” above. You can reach the Maine turnpike office at 207-871-7771. Mobile home shipments can only travel on Monday, Tuesday, Wednesday and on Thursdays – after that you may not travel. Night shipments may be approved but have to clear the Maine state police for permission first.
When pilot cars are required.
If your shipment is over any of the following you will be required to have a pilot car or escort vehicle by the Maine DOT office.
If highway is divided, a single pilot car or escort vehicle is to be positioned at the rear of the vehicle. If the highway is undivided, a single pilot car or escort vehicle is to be positioned at the front of the truck and trailer.
Width: 12 feet to 14 inches requires 1 pilot car or escort vehicle., 14 feet and 6 inches to 15 feet and 11 inches requires 2 pilot cars or escort vehicles. Height: Over 16 feet requires a state police escort. Length: Over 79 feet and 11 inches requires 1 pilot car or escort vehicle. Over 110 feet requires 2 pilot cars (escort vehicles). Over 125 feet requires a state police escort.
NOTES: Signs must say “oversize load” in 10 inch high black letters on a yellow background.
They must be at least 7 feet wide by 18 inches high and posted on both the front and rear.
18 inch by 18 inch flags must be posted on all four corners of load. Pilot cars must have 2-way radio that has contact with at least a ½ mile range. The truck must have a flashing amber light on top of the cab.
How to apply for trucking permits.
Maine Department of State Bureau of Motor Vehicles, overlimit Permit Unit
29 State House Station
Augusta, ME 04333 Phone: 207-622-5332 E-mail: overpermits@maine.gov Office hours: Monday thru Friday 7:30 Am until 5 PM Eastern Time
NOTES: The Maine turnpike requires a separate permit and has its own size/weight limits. (800) 698-7747 or 207-871-7771. Permits can be purchased
at Maine Turnpike toll plazas. Cost is $10. Signs must say “oversize load” in 10 inch high black letters on a yellow background. They must be at least 7 feet wide by 18 inches in height and posted on both the front and rear. 18 inch by 18 inch flags must be posted on all four corners of load. Pilot cars must have 2-way radio that has contact with at least a ½ mile range. The truck must have a flashing amber light on top of the cab.
Required shipment truck and trailer markings.
#####Coder notes>bring it:
Permit valid for.
DOT links.
Map shot.
Contact info.
Road closures.
Thaw law.
MDOT for juicy info that is hard to find.
Anson, Auburn, Augusta, Bangor, Bar Harbor, Bath, Belfast, Berwick, Biddeford, Bingham, Boothbay Harbor, Brewer, Bridgton, Brunswick, Brunswick Station, Bucksport, Calais, Camden, Cape Neddick, Caribou, Chisholm, Clinton, Cumberland Center, Damariscotta-Newcastle, Dexter, Dixfield, Dover-Foxcroft, East Millinocket, Eastport, Ellsworth, Fairfield, Falmouth Foreside, Farmingdale, Farmington, Fort Fairfield, Fort Kent, Freeport, Fryeburg, Gardiner, Gorham, Greenville, Guilford, Hallowell, Hampden, Hartland, Houlton, Howland, Kennebunk, Kennebunkport, Kittery, Kittery Point, Lake Arrowhead, Lewiston, Limestone, Lincoln, Lisbon Falls, Little Falls-South Windham, Livermore Falls, Loring AFB, Machias, Madawaska, Madison, Mars Hill-Blaine, Mechanic Falls, Mexico, Milford, Millinocket, Milo, Newport, Norridgewock, North Berwick, North Windham, Norway, Oakland, Old Orchard Beach, Old Town, Orono, Oxford, Pittsfield, Portland, Presque Isle, Randolph, Richmond, Rockland, Rumford, Saco, Sanford, Scarborough, Searsport, Skowhegan, South Eliot, South Paris, South Portland, South Sanford, Springvale, Thomaston, Topsham, Unity, Van Buren, Waldoboro, Waterville, Westbrook, West Kennebunk, Wilton, Winslow, Winterport, Winthrop, Wiscasset, Woodland, Yarmouth, York Harbor.
The information contained in these pages is research information primarily for use by oversize and overweight trucking company drivers, dispatchers and pilot car companies. While every effort is put into maintaining the accuracy of this information you must absolutely verify this information with the Maine State DOT Permits office before commencing movement.
2020 Ontario winter frost/spring thaw laws and seasonal weight restrictions.
Restrictions during winter frost and spring thaw law months.
All annual and project heavy haul trucking permits are not valid on any highways unless otherwise specified on the permit during frost or thaw months:
March and April in Southern Ontario
March, April and May in Northern Ontario
For the purposes of this restriction the Province of Ontario is divided, west to east, by:
A line formed by the Severn River to Regional Rd. 169
Regional Rd. 169 from Washago to Hwy. 12
Hwy. 12, from Regional Rd. 169 to Hwy. 7, north of Sunderland
Hwy. 7, from Hwy. 12 to Regional Rd. 7B at Carleton Place
Regional Rd. 7B to Hwy. 15
Regional Rd. 29 to Arnprior
Single trip permits for transporting heavy haul shipments on highways not designated in Schedules 1, 2 and 3, may be issued but are subject to axle weight controls established by the Ministry of Transportation.
Pursuant to The Highway Traffic Act, the Ontario Ministry of Transportation will impose reduced load weight limits for designated parts of the provincial highways between March 1 and April 30, for Schedule 1 and Schedule 2 roadways, and from March 1 to June 30 for Schedule 3 roadways.
Spring frost/thaw law weight maximums (restrictions) for Ontario:
Reduced loads.
Schedule 1.
Pursuant to the Highway Traffic Act, the ministry will impose reduced load limits for those designated parts of the King’s Highways listed in Schedule 1, when appropriate, between March 1, 2020 to April 30, 2020: Verification.
Schedule 2.
Pursuant to the Highway Traffic Act, the ministry will impose reduced load limits for those designated parts of the King’s Highways listed in Schedule 2, when appropriate, between March 1, 2020 to May 31, 2020.
When signs are posted, the following Highways will have a Reduced Load Limit for their ENTIRE length: Verification.
Schedule 3.
Pursuant to the Highway Traffic Act, the ministry will impose reduced load limits for those designated parts of the King’s Highways/Roads listed in Schedule 3, when appropriate, between March 1, 2019 to June 30, 2019.
When signs are posted, the Highway/Roads within the following Territories will have a Reduced Load Limit: Verification.
It is important for truck drivers and trucking company dispatchers to make certain they are operating in accordance with the Ontario posted frost/thaw laws and seasonal weight restrictions. Changes to these restrictions is subject to change hourly during the winter and spring months. You are expected to be aware of these changes and operate accordingly. It is possible that heavy fines may be levied as well as your truck being ordered out of service and not permitted to travel. We suggest you bookmark this page for future reference.
Seasonal weight restrictions limit the maximum weight of vehicles allowed to travel on certain roads as a way to help prevent damages to public assets and protect public investment in the roadways.
2020 New Brunswick winter frost/spring thaw laws and seasonal weight restrictions.
It should be noted New Brunswick has not updated their official spring weight restrictions page governing the winter frost and spring thaw laws since the winter of 2017. What this tells us is the information they last published seems to be working for them now so there’s no need to update it. If you wish to verify this by speaking with them personally you can call Shawn Berry the communications official for the New Brunswick Department of Transportation and Infrastructure 506-453-5634.
Province of Alberta DOT shipping regulations, limitations, rules and laws for the trucking of oversize and over weight loads over the roads and highways in the Province of Alberta.
Alberta Canada official coat of arms.
Please share your expertise or knowledge with our other visitors below.
Trucking & pilot car directory.
Locate trucking companies and pilot car companies in Alberta:
Length: The overall maximum length allowed in Alberta without a permit is 23 meters (75′ 3″). Width: The maximum width allowed is 2.6 meters (8′ 6″‘). Height: The maximum height allowed in Alberta is 4.15 meters 13′ 7″. Weight: 6,000 kg maximum on steer axle. Tandem axles: 17,000 kg. Tridum axels is 17,000 kilograms (37,478.6 lbs) as well. All axle weights are subject to the size of the tire. Overhang: We have no information on allowable overhang in Alberta. Please share your knowledge with others below. Notes:
* Super single tires require “New Generation, Wide Base” tires with a minimum tire width of 445 mm. Available by permit only. Super single tires do not apply to the steering axle.
** These weights for tridem axles apply to provincial highways only. The maximum weight for a tridem axle on a municipal road is 17,000 kg. Permits may be available to achieve heavier weights.
*** All axle weights are subject to minimum tire size. The maximum weight per tire shall not exceed the lesser of the tire manufacturer’s weight rating or the width of the tire stamped on the sidewall multiplied by 10 kg/mm.
Source: Alberta Transportation
Routine trucking permits.
Oversize and overweight trucking permits that are routinely issued by the Alberta DOT:
Length: 52 meters (170′ 8″) is about the maximum length you can get by with on a routine permit. Width: 14′ 7″ wide depending on routing for routine trucking permits. Height: 5.3 meters (17′ 5″) in height is the cut off point for routine permits of course contingent on routing. Weight: Weight is where you run into a problem. Alberta wants to know every single detail down to the size of tire you are running. Routing being a huge issue we can’t state a “routine” weight as it all depends on your axle spacings, combinations and tire sizes. Just for a safe number we’re going to say a routine permit caps out at 43,359.2 kilograms (100,000 lbs). Overhang: 6.09 meters is about the most you can get on routine depending on routing.
Superload information.
Alberta superload information:
The maximum width normally allowed is 7.32 meters (24′) so anything over this width is a superload. We are researching information pertaining to shipping superloads in the province of Alberta Canada. If you happen to have expertise or knowledge of trucking superloads in this province please share your information for our other viewers below. Thank you.
Permitted travel times & restrictions.
Alberta DOT travel times and restrictions for oversize and overweight trucking:
The rule of 1/2 hour before sunrise until one full hour after sunset is observed in Alberta. Travel is allowed on Fridays until 3pm in the afternoon for loads that exceed 3.85 meters in width (12′ 7″) (WE WILL NEED TO DOUBLE CHECK THIS AS IT WAS LEFT AS A CORRECTION COMMENT BELOW). Travel is otherwise allowed and unrestricted on Saturdays unless stated on your permit. Night travel is permitted for loads that are over length as long as you have 1 rear pilot car/escort vehicle and are on multiple lane roads. If your shipment is no longer than of 42 meters (137′ 10″) on a single lane road you will be required to have1 front pilot car/escort vehicle and 1 rear pilot car/escort vehicle. Weekend travel is permitted for loads that are over length only. If your shipment is in excess of 4.45 meters (14′ 7″) in width you will be permitted to travel only during daylight hours. If over 3.85 meters (12′ 7″) in width you may not travel on Sundays. There is not travel permitted on the following holidays: New Years day, Provincial day, Good Friday, Victoria day, Canada day, Family day, Labour day, Thanksgiving day, Remembrance day, Christmas day and on Boxing day.
Adverse weather conditions: If adverse weather conditions are reported you may not proceed with your shipment and are required to remain where ever you are. If adverse weather conditions interrupt your shipment you are required to pull over at the nearest suitable location even if it is on the side of the road unless you are over width. Over width loads must continue until they are able to completely turn off of the road and remain until adverse weather conditions stop. If your shipment is over 4.45 meters (14′ 7″) in width or 5.32 meters (17′ 5″) in height you are not permitted to travel with snow or fog visibility less than 150 meters (492′), if the road is covered with snow or ice or sleet or any other conditions that may effect the driver from proceeding with the absolute safety in mind first and foremost.
Frost laws: Alberta does have frost laws but when they are in effect changes every year based on testing with a heat flow model that measures to 30 cm below the surface. So, if you are shipping during the spring months you will need to call the number below for the exact frost law restriction dates. There are exemptions which include milk and bread trucks, farm machinery, water, fuel, fertilizer, mail and buses.
When pilot cars are required.
If your shipment is in excess of any of the following you will be required to have a pilot car escort you:
Length: If your shipment is in excess of 34 meters (111′) in overall length you are required to have 1 rear pilot car on single lane roads. For shipments in excess of 38 meters (124′ 8″) you are required to have 1 front pilot car/escort and 1 rear pilot car/escort. Width: If your shipment is in excess of 3.85 meters (12′ 7″) wide you are required to have 1 front pilot car/escort on a single lane road or one rear pilot car/escort on multiple lane roads. For shipments over 4.45 meters (14′ 7″) wide require 1 front pilot car/escort and 1 rear pilot car/escort on single lane roads. If your shipment is in excess of 5.5 meters (18′) you are required to have 1 front and 1 rear pilot car/escort vehicle on all roads. Height: Alberta does not normally use pilot cars with high poles as they have designated routes for shipments that are over height. You can view the routes on the Alberta DOT high load corridor page located here.
Weight: As long as your shipment can maintain the minimum required speed limit you will probably not be required to have a pilot car/escort by the Alberta DOT. Overhang: If you have overhang that is over 6.5 meters (21′ 4″) you will be required to have 1 rear pilot car/escort vehicle. If your shipment overhang is in excess of 9 meters (29′ 6″) you will be required to have 1 front and 1 rear pilot car/escort vehicle.
Pilot car requirements.
Pilot car (escort vehicle) requirements for operating in Alberta province are as follows:
Pilot car/escort vehicle operators are NOT required to take any sort of DOT certification course in order to operate in Canada. Your vehicle is required however to have a lighted sign box that is a minimum of 180 cm x 35 cm x 10 cm (72″ x 14″ x 4″), 2 – 175 mm (7″) diameter flashing lights mounted on the top of the sign box on each side with 2 amber strobing or rotating lights a minimum of 203 mm (8″) mounted between the flashing lights on top of the box as well. The sign box must light up and be visible from a minimum distance of 200 meters (656′). The sign box must have either a red and white D sign or a yellow with black lettering stating “OVERSIZE LOAD”, “WIDE LOAD”, OR “LONG LOAD”. If you have the “D” sign your letter must be no less than 20 cm (8″) in height with a 4 cm (1 5/8″) line thickness. If you have the yellow sign your lettering must be no less than 20 cm (8″) with a 4 cm (1 5/8″) line thickness. The sign box must be mounted on the top of the vehicle and covered when not in operation. You are also expected to have the following items inside of the vehicle: CB radio or high powered 2-way radio, first aid kit, fire extinguisher type A, B & C of at least a 2 liters, 3 reflective road triangles, 3 traffic cones, reflective vest (worn while working), slow/stop sign, 3 red or orange safety colored flags no less than 40 x 40 cm (16″ x 16″), nose cone flashlight and a hard hat.
Shipment, truck & trailer markings.
Truck, trailer and shipment required signs, banners and flags:
All trucks that are hauling oversize or overweight loads must have a strobing, flashing or rotating amber light mounted to the roof that is visible from 360 degrees at a minimum distance of 200 meters (656′). All 4 outermost corners corners of the overall shipment and any obtrusive points must have flags mounted to them that are safety red or orange in color no less than 40 cm x 40 cm (16″ x 16″) and have the flags exchanged for lighting if moving during the night. A sign stating the nature of the load; “OVERSIZE LOAD”, “WIDE LOAD” or “LONG LOAD” must be mounted to the front and rear of the overall shipment. Signs must be a minimum of 12′ in height and 6′ in width with a yellow background and black letting with lettering thickness no less than 4 cm (1 5/8″) thick.
Alberta DOT and other information.
Alberta DOT contact and other information:
Alberta DOT & Central Permit Office Telephone help line: 403-342-7138 toll free (all of North America): 800-662-7138 Fax: 403-340-5278 Road ban information: Current road bans. Toll free (all of North America): 855-762-3226
6 AM until 12 Midnight Monday – Friday
7 Am until 10 PM on weekends and holidays – MOUNTAIN TIME ZONE
The information contained in these pages is research information primarily for use by oversize and overweight trucking company drivers, dispatchers and pilot car companies. While every effort is put into maintaining the accuracy of this information you must absolutely verify this information with the Alberta Province DOT Permits office before commencing movement.
