Its software is used by body builders, upfitters, truck dealers and fleet companies in 30 countries.

TruckScience has been developing solutions for the commercial vehicle industry since 1985. The TruckScience tool comes with a library of pre-populated specifications/drawings and features, such as compliance indicators and drag-and-drop design. The National Truck Equipment Association (NTEA) recently partnered with TruckScience, a global technology provider, to offer association members access to an innovative weight calculator resource at a discounted subscription rate. To view the designated primary network highways visit. No tire shall exceed 550 pounds per inch of tire width. The vehicle must comply with the inner and outer bridge length limits of the federal bridge formula.Īll tire and axle weights must be legal. The gross vehicle weight shall not exceed 129,000 pounds. On the primary network system, a vehicle with sufficient number of axles and bridge lengths can exceed 105,500 pounds For more information on the interstate permit visit the Steering axle shall be determined by the manufacturer’sĮxceed 20,000 pounds. No tire shall exceed 550 pounds per inch of tire width, except on the steering axle. The vehicle combination must have sufficient axles and bridge lengths. Vehicle hauling a reducible load exceeds 80,000 pounds GVW. The legal GVW on the interstate highway system is 80,000 pounds. On all other highways the maximum GVW is 80,000 pounds unless designated for more, not to exceed 105,500 pounds. The legal gross vehicle weight (GVW) on ND state highways is 105,500 pounds unless otherwise posted. N = Number of axles in the group under consideration.

L = Distance in feet between extremes of any group of two or more consecutive axles. W = Maximum weight in pounds on any group of two or more axles. This formula was enacted by Congress and the State to limit the weight-to-length of a vehicle crossing a bridge. The formula for the calculator is a weight-to-length ratio. The allowable weight on a vehicle/vehicle combination may increase by either adding additional axles or by increasing the distance between axles.

The Truck Weight Calculator provides a convenient way to determine the maximum legal weight that any set of axles on a vehicle/vehicle combination may carry on ND interstate and state highways.

Truck weight distribution calculator