Quebec Frost Laws, Seasonal Load Weight and Speed Restrictions – 2019

The province of Quebec is divided into three Thaw Zones, each with different starting and ending dates for load limit reductions:

Thaw Zones Map (+ A More Detailed Map PDF)

According to the Ministry of Transportation, spring thaw restrictions are:

Official dates for 2018 (Updated April 18)

Zone 1

From Monday, March 5 (00:01) to Friday, May 4 (23:59)

Zone 2

From Monday, April 2 (00:01) to Friday, May 18 (23:59)

Zone 3

From Monday, April 23 (00:01) to Friday, June 22 (23:59)

Depending on the changes in weather conditions, the start and end of the load restriction period may be moved ahead or postponed.

For most recent info check

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:

Examples of Spring Weight Restrictions for Quebec

Reduced tandem axle weight of 15,500 kg

Down from 18,800 kg

Reduced tridem axle weight for 2.4m -
< 3m axle spread of 18,000 kg

Down from 21,000 kg

Reduced tridem axle weight for 3m -
< 3.6m axle spread of 21,000 kg

Down from 24,000 kg

Reduced tridem axle weight for 3.6m - 3.7m axle spread of 22,000 kg

Down from 26,000 kg

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