Oklahoma State Shipping Regulations

Oklahoma DOT permits. State shipping regulations, limitations, rules and laws for the trucking of oversize and over weight loads over the roads and highways.

Oklahoma State Seal.

The official seal for the great state of Oklahoma.

Please share your expertise or knowledge of Oklahoma state shipping regulations with other visitors below.

Trucking company and live pilot car system.
Locate heavy haul and oversize trucking companies in the state of Oklahoma.

Locate Oklahoma trucking companies.
Locate pilot cars that are in Oklahoma.
Get multiple shipping quotes to ship a oversize or heavy load originating out of Oklahoma.
Order your own oversize trucking permits from Oklahoma state.

Legal load limits.
Oklahoma DOT legal load size limits and weight limitations.

Length: Trailers no longer than 59’ 6” on designated highways. All other roads 53’.
Width: The maximum width allowed by law is: 8’ 6” wide.
Height: The maximum allowed height is 13’ 6”.
Weight: 80,000 lbs. GVW on the interstate and 90,000 off of the interstate on many approved routes. 20,000 single, 34,000 tandem, 42,000 triples.

Routine heavy haul, oversize shipping, trucking and transport permits.
Oversize and overweight trucking permits that are routinely issued by Oklahoma DOT:

Length: No set maximum length is set on routine permits.
Width: For your reference it was 16’ maximum for routine permits (and still is on the Interstates) but now they have raised it to 23′ on pre-approved routes.
Height: Up to 21’ depending on routing. Anything over 15’ 9” requires a high pole.
Weight: Single 20,000 lbs., 40,000 lbs. on Tandem, Tridem 60,000 lbs., Quadem, 80,000 lbs. 5 axles 65,000 lbs., 6 axle 115,000 lbs., 7 axle 135,000 lbs., 8 axles 150,000 lbs. Gross weight and axles: 5 axles: 100,000 lbs. 6 axels: 120,000 lbs, 7 axles 1140,000 lbs, 8 axles: 160,000 lbs. It used to be anything over 150,000 lbs was a superload but now anything that does not comply with OL-1 (read more here) truck standards is now a superload.
Notes: You can put 15,000 on your steer as long as you have a minimum spacing of 15′. You can put up to 20,000 lbs under routine permits as long as you have dual lane trunnion axles or our trailer types page.

Superload information.
Oklahoma ODOT superload information.

Oklahoma superloads are now all about being in compliance with the statutory regulations defined in OL-1. Anything that is not in compliance with OL-1 is going to need to be thoroughly reviewed by the state engineers and maybe even go through a ODOT approval process. If you have any additional information about shipping superloads in Oklahoma state please comment below so we can share that information with our other viewers. It is fine to link back to your own website if you are contributing to our community.

Pilot car and escort vehicle requirements.
When you will need a pilot car in Oklahoma state.

Length: All roads over 80’ require one front. Over 100’ one front and one rear pilot car.
Width: Loads over 12’ wide, one front on 4 lanes or less or rear if over 4 lanes. Up to 15’ then second escort is required. 18’ or wider needs police escort.
Height: If over 15’ 9” you may be required to have a high pole depending on route..
Note: Permits will state on them if they are valid for either 3 or 5 days.

Travel Restrictions
Times of travel that are permitted.

Travel is permitted 1/2 hour before sunrise and 1/2 hour after sunset 7 days a week.

How to apply for Oklahoma heavy haul, wideload and oversize trucking permits.

Size and Weight Permission Department
2401 NW 23 St., Suite 45
Oklahoma City, OK 73107

New Oklahoma State DOT Trucking Information website

Help line: 405-522-9060
Hours: Monday – Friday 7:00 am – 4:30 pm
Central Standard Time


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 Oklahoma State DOT Permits office before commencing movement.



Quebec Frost Laws

2020 Quebec frost – thaw laws, seasonal load weight and speed restrictions.

Frost and thaw laws.



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.

For most recent info check https://www.transports.gouv.qc.ca/en/camionnage/degel-periode-restrictions-charges/Pages/periode-degel.aspx

For restrictions refer to “Québec Vehicle Load and Size Limits Regulation – Highway Safety Code”

E.g. The load limit of an axle or combination of axles, in a normal period or in a period of thaw or rain, belonging to a class in Schedule B is as follows: http://legisquebec.gouv.qc.ca/en/ShowDoc/cr/C-24.2%2c%20r.%2031?langCont=en#se:14


See also:

Tire chain laws.
Tire chain laws by location.
Trucking regulations.
Trucking regulations in Quebec.
Federal bridge formula.

British Columbia Frost Laws

2020 British Columbia winter frost/spring thaw laws and seasonal weight restrictions.

2020 Seasonal frost and thaw law restrictions.

The British Columbia Ministry of Transportation and Infrastructure maintains an frequently updated database that posts frost law notices and seasonal load restrictions by region. Depending on the region weight restrictions may already be in place while others are scheduled to take place imminently.

NEW: Get on the e-mail notification list to be notified of seasonal load restriction changes for the following areas in British Columbia:

The link below includes an interactive map with links to 28 regions. Each region posts its current road conditions and any weight restrictions imposed. The current map indicates restrictions from “no weight restrictions” to “50%” of rated axle weights restrictions. It also includes access to recently updated load restrictions and road reports. British Columbia is excellent about providing up to date information about their frost laws and when they are in effect. It is important for truck drivers and trucking company dispatchers to make certain they are operating in accordance with the posted frost laws, seasonal load weight and speed restrictions that are posted. 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.

  • South Vancouver Island.
  • Central Vancouver Island.
  • North Vancouver Island.
  • Howe Sound,
  • Sunshine Coast.
  • Lower Mainland.
  • Fraser Valley.
  • South Okanagan.
  • Kootenay Boundary.
  • Central Kootenay.
  • East Kootenay.
  • Selkirk.
  • Okanagan-Shuswap.
  • Nicola.
  • Thompson.
  • South Cariboo.
  • Central Cariboo.
  • North Cariboo.
  • Fort George.
  • Robson.
  • South Peace.
  • North Peace.
  • Nechako.
  • Lakes.
  • Bulkley Nass.
  • Skeena.
  • North Coast.
  • Stikine.


British Columbia:



See also:

Tire chain laws.
Tire chain laws by location.
Trucking regulations.
Trucking regulations in British Columbia.
Federal bridge formula.

Please share your knowledge with others by commenting below:


Washington D.C. Shipping Regulations

2018 Washington D.C. Shipping Regulations.
Washington D.C. district seal


Trucking weight limitations.

Single axle: 31,000 lbs. per axle.
Tandem axles: 31,000 lbs. per axle.
Triple axles: 31,000 lbs. per axle.
Quad axles: 313,000 lbs. per axle.
Maximum weights are considered on a case by case basis. They will determine if you are eligible (considering proposed routing) at the time you apply for your permit. No single axle will be permitted to exceed 31,000 lbs.

Truck length limitations:

If you propose to move any shipment with a length that is in excess of 56 feet, you may be required to travel during night time hours only. Again, this is considered on a case by case basis. Any load that exceeds 80′ (feet) will be required to have a front (lead) pilot car (escort vehicle).

Truck width limitations:

Maximum width for legal travel is 8′ 6″. Anything in excess of 8’6″ (inches) in width will be decided on a case by case basis (considering proposed routing). Shipments that are in excess of 12′ (feet) in width will be required to have a lead pilot car vehicle.

Truck height limitations:

Truck height limitations are determined by the overhead clearance of any obstructions that may exists (or are proposed; temp, construction, etc) in the routing proposition you propose. Planning a route that gives you a minimum of a 6″ (inch) clearance is suggested. Any shipment that is in excess of 13′ 6″ (feet/inches) will be required to have a pilot car (escort vehicle) equipped with a height pole

Truck overhang limitations:

If overhang is in excess of 10′ (feet) from the rear of the trailer you will be required to have a lead vehicle as well as a chase.

Truck signs and flag requirements:

Shipments that are in excess of 8′ 6″ (feet/inches) are required to have “wideload” signs affixed to the front and rear of the truck and trailer. No flags are “required”. There are no sign size/letter specifications in the Washington D.C. laws but note they should be professionally printed signs.


If you are in a situation where you have excess (extreme) widths and/or heights you will more than likely be required to travel during night time hours.

Pilot car (escort) vehicle requirements (PiloTrac):

No particular type of vehicle is specified in Washington D.C. laws. However, we do suggest a minimum wheel base of 72 inches. Pilot cars (escort vehicles) will be required to have a amber flashing (rotating) light mounted on the very top of the vehicle. We would suggest pilot cars have the minimum requirements by other states such as: slow/stop paddle, professional wide, oversize, long load signs, company name, address and phone on the side of vehicle, flares, safety vest, CB radio and a height pole if the shipment you intend on escorting is in excess of 13′ 11″.

Travel times and restrictions:

Travel is permitted 24 hours a day unless you are in the extreme excess as noted above in height, width and length. Shipments that are wideloads or overheight or over length may be restricted to travel between 10 pm and 5 am. If so you will not be permitted to travel from 7am til 9:30 am and 4 pm til 6:30 pm. During extreme weather conditions travel may be restricted. Weekend travel is allowed as well as weekends. The Washington D.C. permitting office will be closed on the following holidays: New Years Day, Martin Luther King Day, Lincoln’s Birthday, Washington’s Birthday, Goof Friday, Memorial Day, Independence Day, Labor Day, Veteran’s Day, Thanksgiving Day, Christmas Day.


Washington District of Columbia Department of Traffic
2nd floor, Potomac Bldg.
614 H Street, NW
Washington, DC  20001

Office hours: 9 am to 3 pm EDT
Phone: 202-442-4670
Website: http://www.EEOT.EC.gov


Washington D.C.flag.