Commercial Driving Passenger Transport 3

Question 1

At what blood alcohol concentration (BAC) is a CDL holder considered legally impaired while operating a commercial passenger vehicle?

Accepted Answer

0.04%

Answer

Federal law sets the CDL impairment threshold at 0.04% BAC — half the standard 0.08% limit — for commercial vehicle operators.

Question 2

What must a bus driver do if a fire breaks out in the engine compartment while passengers are aboard?

Accepted Answer

Evacuate all passengers immediately and move them away from the bus

Answer

An engine fire requires immediate evacuation of all passengers and moving them well away from the vehicle before attempting any firefighting.

Question 3

Which documents must a CDL passenger endorsement holder carry while on duty?

Accepted Answer

A valid CDL with the P endorsement and any required medical certificate

Answer

Drivers must carry a valid CDL bearing the Passenger endorsement plus a current medical examiner's certificate whenever operating a passenger-carrying CMV.

Question 4

How often must a driver operating under hours-of-service rules take a rest break during a shift?

Accepted Answer

A 30-minute break is required after 8 consecutive hours of driving

Answer

FMCSA hours-of-service rules require a 30-minute off-duty or sleeper-berth break after 8 consecutive hours of driving time.

Question 5

What is the purpose of the interlock system on a bus equipped with a wheelchair lift?

Accepted Answer

It prevents the bus from moving while the lift is in operation

Answer

The interlock prevents the bus from moving while the wheelchair lift is deployed, protecting passengers who are boarding or alighting.

Commercial Driving Practice Test

Commercial Driving Practice Test

Commercial Driving Passenger Transport 3