PennDOT Commercial Driver's License 4

Question 1

A CMV driver must complete a written post-trip inspection report when:

Accepted Answer

Any defect or deficiency is found that could affect safety

Answer

Drivers must submit a written inspection report when they discover any defect that could affect the safe operation of the vehicle.

Question 2

In Pennsylvania, what is the weight limit on the steer axle of a standard 5-axle tractor-trailer?

Accepted Answer

20,000 lbs

Answer

Pennsylvania allows a maximum of 20,000 lbs on the steer axle of a tractor-trailer under standard weight regulations.

Question 3

When driving a combination vehicle, what is 'trailer sway' most commonly caused by?

Accepted Answer

Excessive speed, especially on curves or ramps

Answer

Trailer sway (fishtailing) most commonly occurs when a driver takes curves, ramps, or makes sudden steering inputs at excessive speeds.

Question 4

Which of the following is required for a Pennsylvania School Bus (S) endorsement applicant?

Accepted Answer

A background check and a valid Class B or A CDL

Answer

Applicants for the School Bus endorsement must hold a Class A or B CDL and pass a background check in addition to the endorsement knowledge and skills tests.

Question 5

Under Pennsylvania regulations, what does a 'K' restriction on a CDL indicate?

Accepted Answer

The driver is restricted to intrastate commerce only

Answer

A 'K' restriction limits the CDL holder to intrastate (within Pennsylvania) commerce only, prohibiting interstate operation.

(PennDOT) Pennsylvania Department of Transportation Practice Test

(PennDOT) Pennsylvania Department of Transportation Practice Test

PennDOT Commercial Driver's License 4