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NFL frost laws.

2020 New Foundland & Labrador winter frost/spring thaw laws and restrictions.

As winter turns to spring in Canada the layers of materials that compose roads are significantly weakened by the excessive amount of water in the road base. As as a result of the annual spring thaw. Studies conducted by the provincial transportation ministries and Canadian Highway Research programs have shown that pavement reactions to a load are 50% to 70% greater in the spring than any other season. For trucks travelling across highways every day, this means that the same axle can cause between five to eight times more damage to the road in the spring than it would at any other time of the year.

In order to reduce the amount of damage done to roads, every Canadian province issues an annual “Spring Thaw” policy. Enforced by the province, the policy restricts loads carried across at-risk highways for a fixed period. For example, in 2017, Ontario’s spring thaw restrictions will run from March to June in some areas of the province, whereas highways in New Brunswick will be regulated from March to May.

The extent of the restrictions, technical criteria, and time period can fluctuate and are dependent on the condition of the road and by region.

 

 

See also:

Exempt goods from frost/thaw law restrictions.

Example of exempt goods from frost or thaw law restrictions.

Transport of the following goods during frost or thaw months may be permitted in some US States and Canadian Provinces. Be sure to check with the appropriate permit office to inquire if your shipment is eligible.

  • Processed feed (livestock feed that has been rolled, split,
    ground or is in pellets) delivered to a farm.
  • Dead animals for rendering.
  • Seed potatoes (for export).
  • Feed to feedlot (must be transported on B-trains or Tractor
    and semi-trailer units only).
  • Feed to farm (for emergency purposes to provide feed until
    the pasture is ready), or livestock to pasture.
  • Seed grain for cleaning and farm use only.
  • Water well drilling equipment to alleviate a water shortage.
  • Livestock or grain to market.

This page is being created/updated 09-11-19

Prince Edward Island Frost Laws

2020 Prince Edward Island winter frost/spring thaw laws and seasonal weight restrictions.

Spring frost laws and weight restrictions for Island roads will begin at 12:01 a.m. on Friday, March 15, 2020.

Frost/thaw law for PEI.

For Prince Edward Island all weather roads, such as routes 1 and 2: Vehicles may carry up to their maximum allowable weight with no overweight exceptions permitted. Other roads: Vehicles may carry 75 percent of their maximum allowable weight during frost law (thaw law) season. Only the road’s posted weight limit is permitted and if the laws are not observed a fine may be levied.

It is important for truck drivers and trucking company dispatchers to make certain they are operating in accordance with the Prince Edward Island 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.

Seasonal weight restrictions limit the maximum weight of vehicles allowed to travel on certain roads as a way to help prevent damage and protect investment in the roadways.

Late winter and early spring driving in this province has its own set of challenges. Previously frozen roads become more vulnerable to damage as they thaw out and soften. Heavy vehicles travelling over paved roads can make it worse by causing the pavement to crack and break up.

What is frost law and why are they necessary?

When pavement thaws during the daytime and freezes at night it is potentially damaging to the road. In order to prevent this “frost laws” are implemented in order to prevent costly damages to the road.

How are roads damaged by frost thawing or the road freezing?

Water from melted ice and snow seeps into cracks in the pavement and softens the gravel underneath. When the water beneath the surface freezes again, it expands and breaks the pavement, causing potholes. If ice continues to form under the pavement from a steady supply of water, it can push the entire surface of the road upward causing the washboard like unevenness (ripple) known as “frost heaving.” These damages are permanent and costly to repair.

Why are Prince Edward Island roads more vulnerable to seasonal damage?

Prince Edward Island consists of a high concentration of silty soil which collects and holds more water beneath the roadway surfaces, making the roads more susceptible to frost heaving and potholes despite any drainage measures that have been put into place.

What are the classifications of roads under weight restrictions?

  • All-weather roads, such as routes 1 and 2: Vehicles may carry up to their maximum allowable weight – with no overweight exceptions permitted.
  • Other roads: Vehicles may carry 75 percent of their maximum allowable weight.
  • Posted weight limits: Only the road’s posted weight limit is allowed.

Contact information:

Department of Transportation, Infrastructure and Energy
3rd Floor, Jones Building
11 Kent Street,
P.O. Box 2000,
Charlottetown, PE C1A 7N8

Phone: 902-368-5100
Fax: 902-368-5395

If you have questions about the frost/thaw laws as well as any other road related inquiries send a e-mail to: roads@gov.pe.ca

Prince Edward Island seasonal weight restrictions:

https://www.princeedwardisland.ca/en/information/transportation-infrastructure-and-energy/seasonal-weight-restrictions

See also:

Please share your knowledge with others by commenting below:

Ontario Frost Laws

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

Frost - thaw laws Ontario.

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.

Source: http://www.mto.gov.on.ca/english/trucks/load-restrictions.shtml

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.

Please share your knowledge with others by commenting below:

New Brunswick frost laws

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.

 

 

See also:

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

Manitoba Frost Laws

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

Manitoba Spring Road Restrictions (SRR) program.

The Manitoba Ministry of Infrastructure divides its province into three sections, with each section having a unique thaw restriction start and end date. In 2020, it will begin its spring road restrictions for Region A and Region B of the province at 6 a.m. on Friday, March 10. Weight restrictions are scheduled to end at 11:59 p.m. on Wednesday, May 31.

The allowable axle weights on weight restricted roads during the spring season are based on the percentages of the legal axle weights, with some exceptions for the single steer axles and in situations where essential commodities are being shipped. There are two levels of spring weight restrictions in Manitoba depending on the strength and surface conditions of the pavement structures. The Level 1 weight restriction applies to weak pavements while the Level 2 weight restriction applies to very weak pavements. The allowable axle weights on different axle configurations are calculated as follows:

Level 1 Spring Weight Restrictions:

  1. On a single steering axle of a single or tandem drive truck tractor:
    • 10 kg per millimeter width of tire up to a maximum of 5,500 kg on all highways.
  2. On a single steering axle of a straight truck or a tridem drive truck tractor:
    • Tire size 305 mm or less: 10 kg per millimeter width of tire up to a maximum of 5,500 kg on all highways.
    • Tire size greater than 305 mm: 9 kg per millimeter width of tire up to a maximum of 6,570 kg on all highways.
  3. On a tandem steering axle group of a straight truck:
    • 9 kg per mm width of tire multiplied by 0.90 (download factor) up to a maximum of 12,240 kg on RTAC Routes or Class A1 highways and up to a maximum of 9,900 kg on Class B1 highways.
  4. On all other axle groups:
    • 9 kg per millimetre width of tire up to a maximum of 90% of the legal axle group weights on all highways.

Level 2 Spring Weight Restrictions:

  1. On all single steering axles of all vehicle configurations:
    • 6.5 kg per millimeter width of tire up to a maximum of 65% of the legal axle weights on Class A1 and Class B1 highways.
  2. On a tandem steering axle of a straight truck:
    • 6.5 kg per millimeter width of tire multiplied by 0.90 (download factor) up to a maximum of 8,840 kg on Class A1 highways and up to a maximum of 7,150 kg on Class B1 highways.
  3. On all other axle groups:
    • 6.5 kg per millimeter width of tire up to a maximum of 65% of the legal axle weights on Class A1 and Class B1 highways.

Road restrictions for Region C, the northern most regions, will begin at 6 a.m. on Sunday, March 12, and end at 11:59 p.m. on Saturday, June 10. Region C is defined as the rest of the province north of the virtual line in Region B.

Spring Weight Restrictions are classified as Level 1 and Level 2 (see table below).

 

Example of Maximum Allowable Axle Weights. Level 1 Spring Weight Restriction, Reduce Axle Weights to 90% Maximum Allowable Weights. Level 2 Spring Weight Restriction, Reduce Axle Weights to 65% Maximum Allowable Weights. A complete list of Charts of Allowable Axle Weights can be found at the following link: http://gov.mb.ca/mit/srr/restrictions.html

Manitoba Spring Road Restrictions Program:

Source: http://www.gov.mb.ca/mit/srr/

Manitoba publishes a list of road bans as conditions change. Go to the above link and look for “Road Bans” in the left column. These bans identify specific roadways and the ban imposed in percent of rated axle capacity.

It is important for truck drivers and trucking company dispatchers to make certain they are operating in accordance with the Manitoba 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.

Seasonal weight restrictions limit the maximum weight of vehicles allowed to travel on certain roads as a way to help prevent damage and protect public investment in the roadways.

Please share your knowledge with others by commenting below: