Commercial Trailer Load Weights and Measures

Welcome to Trailcon’s resource hub for commercial trailer load weights and measures. As a leader in the transportation industry, we understand the importance of ensuring that your trailers comply with regulations and standards for safe and efficient hauling.

Trailcon is committed to providing comprehensive information and guidance on load weights and measures to support your operations. Whether you’re transporting goods locally or across borders, it’s essential to adhere to legal requirements and optimize your trailer configurations for maximum efficiency.

Ontario Weights Per Axle Group & Gross Vehicle Weights

Maximum Weight Allowance Equipment Weights (assumed) Payload
Tractor Axle Group Trailer Axle Group Gross Vehicle Weight Weight of Tractor Weight of Trailer Max weight allowance less equipment weight
Steer Axle T/A Drive Axles 49″ 49″ T/A Axle        
5,500 kgs 18,000 kgs 18,000 kgs 41,500 kgs 7,938 kgs 6,350 kgs 27,212 kgs
12,125 lbs 39,683 lbs 39,683 lbs 91,491 lbs 17,500 lbs 13,999 lbs 59,992 lbs
Steer Axle T/A Drive Axles 49″ 72″ T/A Axle        
5,500 kgs 18,000 kgs 19,100 kgs 42,600 kgs 7,938 kgs 6,350 kgs 28,312 kgs
12,125 lbs 39,683 lbs 12,108 lbs 93,916 lbs 17,500 lbs 13,999 lbs 62,417 lbs
Steer Axle T/A Drive Axles 49″ 60″ Tridem        
5,500 kgs 18,000 kgs 24,000 kgs 47,500 kgs 7,938 kgs 7,484 kgs 32,078 kgs
12,125 lbs 39,683 lbs 52,910 lbs 104,719 lbs 17,500 lbs 16,499 lbs 70,719 lbs
Steer Axle T/A Drive Axles 49″ 72″ Tridem        
5,500 kgs 18,000 kgs 26,000 kgs 49,500 kgs 7,938 kgs 7,484 kgs 34,078 kgs
12,125 lbs 39,683 lbs 57,320 lbs 109,128 lbs 17,500 lbs 16,499 lbs 75,128 lbs
  • assuming average tractor weight of 7,938 KG
  • assuming average tandem dry van weight of 6,350 KG
  • assuming average tridem dry van weight of 7,484 KG
  • add 1,000 KG on average to a dry van weight for a reefer unit (assuming full of fuel)
  • assuming inter-vehicle-unit-distance is 3.6 metres or more

Disclaimer: This information is provided as a reference only. For the most up-to-date information, please consult the Ministry of Transportation Canada website.

Guide to Trailer Weight Regulations in Canada

Maximum Allowable Weights:

  • Axle Weights: This refers to the maximum weight allowed to be placed on individual axles of a trailer. Axle weight limits vary depending on factors such as axle configuration, tire size, and the type of road.
  • Gross Vehicle Weights (GVW): GVW is the total weight of a fully loaded trailer, including cargo, passengers, and fuel. There are legal limits on GVW to ensure that trailers do not exceed the capacity for which they are designed.
  • Axle Group Weights: Axle group weights refer to the maximum combined weight allowed for groups of axles on a trailer. Different axle configurations have specific weight limits to prevent damage to roads and bridges.

Load Distribution Guidelines:

  • Proper load distribution within trailers is crucial for maintaining stability and safety while on the road. It involves evenly distributing the weight of cargo to prevent issues such as trailer sway, uneven tire wear, and loss of control.
  • Guidelines may include recommendations for placing heavier items closer to the trailer’s center of gravity and evenly distributing weight between axles.

Bridge Formula Calculations:

  • Bridge formula calculations are used to determine legal axle spacings and axle weights for compliant trailer configurations.
  • These calculations help ensure that trailers distribute weight evenly across axles to prevent damage to roads and bridges, particularly on bridges with weight restrictions.

Permit Requirements:

  • Oversize or overweight loads that exceed standard legal limits require permits for transportation.
  • Permit requirements vary depending on factors such as load size, weight, dimensions, and route. Permits may be issued by government agencies or regulatory authorities and often come with specific conditions and restrictions.

Regulatory Compliance:

  • Regulatory authorities such as the Ministry of Transportation (MTO) provide the latest regulations and guidelines governing commercial trailer weights and measures.
  • Compliance with these regulations is essential for ensuring safety, minimizing road damage, and avoiding penalties or fines.

At  Trailcon,

we believe in empowering our customers with the knowledge and resources they need to operate safely and efficiently. Whether you’re a seasoned transportation professional or new to the industry, our goal is to provide you with valuable insights and support to help you succeed.

For additional information or assistance, please contact our team. We’re here to help you navigate the complexities of commercial trailer load weights and measures and optimize your operations for success.