DOT Weight and Size Limit Regulations 4

Question 1

What is the maximum allowable gross vehicle weight (GVW) on Interstate highways under federal regulations?

Accepted Answer

80,000 pounds

Answer

Federal law sets the maximum gross vehicle weight at 80,000 pounds on the Interstate Highway System.

Question 2

Under the Bridge Formula (Formula B), what primary factor determines the allowable weight between any group of axles?

Accepted Answer

The distance between the outer axles of the group

Answer

Bridge Formula B uses the spacing (distance) between the outermost axles of any axle group to calculate the maximum allowable weight.

Question 3

A vehicle with a single steering axle may carry a maximum of how many pounds under federal weight limits?

Accepted Answer

12,000 pounds

Answer

Federal regulations limit a single steering (front) axle to 12,000 pounds gross weight.

Question 4

What is the maximum allowable width for a commercial motor vehicle operating on National Network highways?

Accepted Answer

102 inches

Answer

The maximum vehicle width on the National Network is 102 inches (8.5 feet) excluding safety devices.

Question 5

A 'permit load' requires a special oversize/overweight permit when the vehicle exceeds which threshold for height on most state highways?

Accepted Answer

13 feet 6 inches

Answer

Most states require a special movement permit when a vehicle exceeds 13 feet 6 inches in height.

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