Chart Formula Permit For Free

The Oregon Driver and Motor Vehicle Services Division (DMV) requires a CDL for operation of vehicles weighing 26,001 lbs. or more, vehicles carrying 16 passengers or more including the driver, or vehicles used to transport hazardous materials.

The gross weight of a tandem axle is limited to the lowest of: ? 600 pounds per inch of total tire width on the tires. The tire manufacturer's sidewall rating. 34,000 pounds. Gross weight of a vehicle or combination of vehicles is limited to the lowest of: ? 600 pounds per inch of total tire width on the tires.

A commercial driver license (CDL) is generally required to operate vehicles with a gross weight over 26,000 pounds, vehicles that transport 16 or more passengers (including the driver), or vehicles used to transport hazardous materials.

The legal operating weight of a truck is determined by the: ? Tire size. Number of axles. Wheelbase of the vehicle or combination of vehicles. In Oregon, the maximum legal gross weight is 80,000 pounds.

The federal government regulates the amount of weight that a semi-truck can carry. There are two types of semi-trucks: single axle and double axle semi-trucks. When talking about the truck, the weight adds up to about 80,000 pounds including the trailer's weight. A semi-truck can haul between 42000 and 48000 pounds.

In Oregon, the maximum legal gross weight limit is 80,000 pounds. The gross weight of a single axle cannot exceed 600 pounds per inch of total tire width on the axle (limited also by manufacturer's sidewall tire rating), or 20,000 pounds, whichever is less.

Extended Weight and/or Overlength Permit (Code 13): Authorizes operations to exceed the maximum legal weight of 80,000 pounds up to a maximum of 105,500 pounds provided the combination has the proper axles and spacing to haul the weight. Axle weights must be legal.

W = 500(LN/N-1 + 12N + 36) W = Overall gross weight on any group of 2 or more consecutive axles to the nearest 500 pounds. L = Distance in feet between the extreme of any group of 2 or more consecutive axles. N = Number of axles in the group under consideration.

Get your CDL study guide today! The bridge formula is: W = 500 ((LN/(N-1)) + 12N + 36). W = the overall gross weight of any two or more consecutive axles to the nearest 500 lbs. L = the distance (in feet) between the outer axles in a group of two or more axles.

Federal law states that any two or more consecutive axles may not exceed the weight computed by the Bridge Formula even though single axles, tandem axles, and gross weight are within legal limits.