PennDOT - Pennsylvania Department of Transportation Commercial Driver Regulations Questions and Answers

Question 1

According to Pennsylvania regulations (Title 75), what is the maximum legal height for a commercial motor vehicle and its load before a special hauling permit is required?

Accepted Answer

13 feet, 6 inches

Answer

14 feet, 0 inches

Answer

13 feet, 0 inches

Answer

14 feet, 6 inches

Question 2

A CDL driver operating a property-carrying vehicle under federal interstate rules in Pennsylvania has been driving for 7.5 hours since their last 10-hour off-duty period. What is the next federally mandated action they must take before they can continue driving?

Accepted Answer

Take a break of at least 30 consecutive minutes.

Answer

Complete a post-trip inspection report.

Answer

Switch to the sleeper berth for at least 2 hours.

Answer

Take at least 10 consecutive hours off-duty.

Question 3

During a pre-trip inspection of a commercial vehicle equipped with hydraulic brakes, which of the following checks is a required step to ensure the system is not leaking?

Accepted Answer

Pumping the brake pedal three times and holding it down firmly for five seconds.

Answer

Checking that the air compressor cuts out between 120-140 psi.

Answer

Draining the air tanks of any moisture and oil.

Answer

Ensuring the slack adjusters have no more than one inch of free play when pulled by hand.

Question 4

A driver is transporting a placardable quantity of Division 1.1 explosives. Under hazardous materials regulations, which of the following is a specific rule for parking the vehicle?

Accepted Answer

The vehicle must be attended at all times unless parked in a designated safe haven.

Answer

The driver may leave the vehicle unattended for up to 45 minutes for a meal break.

Answer

The vehicle must be parked on the shoulder of the highway if a rest stop is unavailable.

Answer

The vehicle must not be parked within 5 feet of the traveled portion of a road.

Question 5

When coupling a tractor to a semitrailer, what is the primary purpose of charging the trailer's air system and then pulling the air supply knob (tractor protection valve)?

Accepted Answer

To check that the trailer emergency brakes will apply if the trailer breaks away.

Answer

To verify the electrical connection is providing power to the trailer lights.

Answer

To confirm the fifth wheel jaws have securely locked around the kingpin.

Answer

To ensure the trailer's service brakes are not leaking air.

Question 6

Under Pennsylvania's "Motor Vehicle Snow and Ice Removal Law," what is the potential consequence for a commercial vehicle driver if snow or ice dislodges from their moving vehicle and strikes another vehicle or pedestrian, causing serious bodily injury?

Accepted Answer

A significant fine ranging from $200 to $1,500.

Answer

A mandatory 30-day suspension of their CDL.

Answer

A summary offense with a maximum fine of $75.

Answer

A verbal warning for a first-time offense.