Class D License Test Exam Questions with Verified
Answers |2026/2027 Update | A+ Graded
When towing another vehicle, the draw bar or other connection must of sufficient strength to
pull all towed weight and must not exceed ____ - Answer -15 feet
A rear view mirror must reflect a view of the highway for a distance of ____ to the rear,
regardless of the load of the vehicle - Answer -200 feet
Any motor vehicle shall not be driven when any of the required ____ or ____ is obscured by the
tailboard, by any part of the load, by dirt or otherwise - Answer -Lamps, reflectors
All trailers or semi-trailers with a gross vehicle weight rating of ____ or more must be equipped
with brakes adequate to stop and hold it. - Answer -3,000 pounds
Drivers should use ____ as the principal means of controlling speed on long grades. - Answer -
Engine compression
If your brakes should fail on a level road, you should ____ and use engine compression to slow
down - Answer -Downshift
1|Page
,Air brake systems are three braking systems combined: the ____ brake system, the ____ brake
system, and the ____ brake system - Answer -Service, parking, emergency
____ brake system applies and releases the brakes when you use the brake pedal during normal
driving - Answer -Service
____ brake system applies and releases the parking brakes when you use the parking brake
control - Answer -Parking
____ brake system uses part of the service and parking brake's system to stop the vehicle in the
event of a brake system failure - Answer -Emergency
Pumps air into the air storage tanks (reservoirs) - Answer -Air compressor
Controls when the air compressor will pump air into the air storage tanks - Answer -Air
compressor governor
Used to hold compressed air - Answer -Air storage tanks
Operated by turning a quarter turn or by pulling a cable. You must drain the tanks yourself at
the end of each day of driving - Answer -Manual air tank drain
2|Page
,Water and oil is automatically expelled. They may be equipped for manual
draining as well - Answer -Automatic air tank drain
Protects the tank and the rest of the system from too much pressure. The valve is usually set to
open at 150 psi - Answer -Safety valve
These gauges tell you how much pressure is in the air tanks - Answer -Supply pressure gauges
This gauge shows how much air pressure you are applying to the brakes - Answer -Application
pressure gauge
Comes on before the air pressure in the tanks falls below 60 psi - Answer -Low air pressure
warning
Holds emergency and parking brakes back by mechanical force - Answer -Spring brakes
Used to engage the parking brakes in newer vehicles with air brakes - Answer -Diamond shaped,
yellow, pull-push control knob
3|Page
, Put on the brakes as hard as you can without locking the wheels (do not turn the steering wheel
while doing this) - Answer -Controlled braking
Class D license is for anyone driving a vehicle or combined set of vehicles in this weight range
_____, as long as they are not carrying hazardous materials - Answer -10,001-26,001 pounds
A Class D license allows for a driver-for-fire to drive any vehicle fitting into the Class __
requirements - Answer -E
you must be ____ years old to receive a class D license - Answer -17
the maximum width for all vehicles except buses is ___ - Answer -8 feet
the maximum width for buses is ____ - Answer -8ft 6in
the load may not project more than ___ beyond the width of the body - Answer -6in
the maximum height for all vehicles is ___ - Answer -13ft 6in
4|Page
Answers |2026/2027 Update | A+ Graded
When towing another vehicle, the draw bar or other connection must of sufficient strength to
pull all towed weight and must not exceed ____ - Answer -15 feet
A rear view mirror must reflect a view of the highway for a distance of ____ to the rear,
regardless of the load of the vehicle - Answer -200 feet
Any motor vehicle shall not be driven when any of the required ____ or ____ is obscured by the
tailboard, by any part of the load, by dirt or otherwise - Answer -Lamps, reflectors
All trailers or semi-trailers with a gross vehicle weight rating of ____ or more must be equipped
with brakes adequate to stop and hold it. - Answer -3,000 pounds
Drivers should use ____ as the principal means of controlling speed on long grades. - Answer -
Engine compression
If your brakes should fail on a level road, you should ____ and use engine compression to slow
down - Answer -Downshift
1|Page
,Air brake systems are three braking systems combined: the ____ brake system, the ____ brake
system, and the ____ brake system - Answer -Service, parking, emergency
____ brake system applies and releases the brakes when you use the brake pedal during normal
driving - Answer -Service
____ brake system applies and releases the parking brakes when you use the parking brake
control - Answer -Parking
____ brake system uses part of the service and parking brake's system to stop the vehicle in the
event of a brake system failure - Answer -Emergency
Pumps air into the air storage tanks (reservoirs) - Answer -Air compressor
Controls when the air compressor will pump air into the air storage tanks - Answer -Air
compressor governor
Used to hold compressed air - Answer -Air storage tanks
Operated by turning a quarter turn or by pulling a cable. You must drain the tanks yourself at
the end of each day of driving - Answer -Manual air tank drain
2|Page
,Water and oil is automatically expelled. They may be equipped for manual
draining as well - Answer -Automatic air tank drain
Protects the tank and the rest of the system from too much pressure. The valve is usually set to
open at 150 psi - Answer -Safety valve
These gauges tell you how much pressure is in the air tanks - Answer -Supply pressure gauges
This gauge shows how much air pressure you are applying to the brakes - Answer -Application
pressure gauge
Comes on before the air pressure in the tanks falls below 60 psi - Answer -Low air pressure
warning
Holds emergency and parking brakes back by mechanical force - Answer -Spring brakes
Used to engage the parking brakes in newer vehicles with air brakes - Answer -Diamond shaped,
yellow, pull-push control knob
3|Page
, Put on the brakes as hard as you can without locking the wheels (do not turn the steering wheel
while doing this) - Answer -Controlled braking
Class D license is for anyone driving a vehicle or combined set of vehicles in this weight range
_____, as long as they are not carrying hazardous materials - Answer -10,001-26,001 pounds
A Class D license allows for a driver-for-fire to drive any vehicle fitting into the Class __
requirements - Answer -E
you must be ____ years old to receive a class D license - Answer -17
the maximum width for all vehicles except buses is ___ - Answer -8 feet
the maximum width for buses is ____ - Answer -8ft 6in
the load may not project more than ___ beyond the width of the body - Answer -6in
the maximum height for all vehicles is ___ - Answer -13ft 6in
4|Page
