The Regional Municipality of Durham and local area municipalities restrict the operation of motor vehicles on designated roads during the spring weight restriction season, as per the Highway Traffic Act and Regional By-law 26-2018. This affects vehicles that are heavier than 5,000 kilograms or five tonnes per axle. The final day of the Regional Municipality of Durham 2024 Weight Restriction season will be April 1, 2024.

Signs will be removed from Regional roads the morning of April 2 where these weight restrictions will no longer apply, however note that some roads may have year-round weight restrictions. Please refer to for more information.

Weight restrictions are needed to prevent damage to Regional roads. In the spring, frozen roads start to thaw making the pavement on some roads temporarily lose strength and become unable to support vehicles heavier than 5,000 kilograms or five tonnes per axle.

Note: Weight restrictions for local area municipality roads may differ from Durham Region. Please contact your local area municipality for details on their weight restrictions.

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