DOT Weight and Size Limit Regulations 2

Question 1

What minimum semi-trailer length must states allow on the National Network under the Surface Transportation Assistance Act (STAA) of 1982?

Accepted Answer

48 feet

Answer

45 feet

Answer

53 feet

Answer

60 feet

Question 2

Under Bridge Formula B, which variable most directly determines the maximum allowable weight for a group of axles?

Accepted Answer

Distance between the first and last axle of the group

Answer

Gross vehicle weight rating

Answer

Number of tires per axle

Answer

Cargo hazard classification

Question 3

Safety devices such as rear-view mirrors may extend beyond the 102-inch width limit by up to how much on each side?

Accepted Answer

6 inches per side

Answer

3 inches per side

Answer

10 inches per side

Answer

No extension is permitted

Question 4

Which of the following vehicle types is typically exempt from federal length limitations under the STAA?

Accepted Answer

Automobile transporters

Answer

Refrigerated trailers

Answer

Bulk liquid tankers

Answer

Flatbed trailers

Question 5

At a permanent weigh station, the primary tool used to definitively verify axle weights for enforcement purposes is:

Accepted Answer

A certified static scale

Answer

A portable axle scale

Answer

A weigh-in-motion sensor

Answer

A load cell dynamometer

Question 6

Under 23 CFR Part 658, which road network is required to accommodate vehicles meeting federal size and weight standards?

Accepted Answer

The National Network of designated highways

Answer

All public roads in the United States

Answer

All state-maintained highways

Answer

Interstate highways only

Question 7

A vehicle with a 40-foot axle spread carrying multiple axle groups must comply with Bridge Formula B to protect:

Accepted Answer

Bridge structures from overload stress

Answer

Roadway pavement only

Answer

DOT inspector safety protocols

Answer

FMCSA registration requirements