What is the maximum allowable driving time in a 14-hour duty period for a commercial driver?
a) 8 hours
b) 10 hours
c) 11 hours
d) 12 hours
What must be clean, properly adjusted, and free of cracks to ensure a clear view of surrounding traffic?
A) Mirrors
B) Windshield
C) Inside Mirrors
✅ Answer: A) They must be labeled and operate smoothly.
✅ Answer: A) By fully applying the foot brake and holding it for one minute
Which system provides heat for passengers and prevents windshield fogging in cold weather
A) Cooling system
B) Heater and defroster
C) Power steering
✅ Answer: A) It should be securely mounted and free of corrosion.
✅ Answer: A) To ensure they are properly attached and free of damage
What does the “S” endorsement on a CDL allow you to do?
a) Drive a school bus
b) Haul double or triple trailers
c) Transport hazardous materials
d) Operate a tanker vehicle
Answer a) Drive a school bus
What is the maximum speed limit for a commercial vehicle on a Washington highway unless otherwise posted?
a) 55 mph
b) 60 mph
c) 65 mph
d) 70 mph
Answer b)60 mph
How long must you hold a CLP before you can take the CDL skills test?
a) 7 days
b) 14 days
c) 30 days
d) 60 days
Answer b)14 days
What should you do when driving in dense fog?
a) Decrease your speed
b) Use your high-beam headlights to improve visibility
c) Reduce your speed and use low-beam headlights
d) Allow enough space in front of the vehicle for precautions
Answer b) Reduce your speed and use low-beam headlights
What 4 air brake checks need to be done?
Answer- A) Air Gauge & Governor Cutoff Check, Warning Devices, Air Leakage Rate Test, Emergency Brake Test
The tire tread depth on commercial vehicle must be what?
Loss of air pressure when working with brake lines/hoses/leaks are ?
To test the service brakes you must:
Answer: C) Pull forward at 5mph, apply brakes, come to a complete stop
The Emergency Kit must consist of what items:
D) Answer- 3 red reflective triangles (6 fuses/3 liquid), charged extinguishers, spare fuses/circuit breaker
What happens when you press the brake pedal with the spring brakes engaged?
Stop before a railroad crossing if your vehicle Carries any amount of chlorine
a) True
b) False
Answer: a) True
What type of vessels are first aid and emergency kits required?
a) School Buses
b) Public Transportation
c) School and Public Transportation
d) Any vehicles producing revenue
Answer: a) School buses
When evaluating Air and Electric Lines/Connectors which of these will not occur if system fails?
a) Partial/Total loss of braking
b) Braking and Control to towed unit
c)Loss of power steering
d) Loss of vehicle's ability to communicate maneuvers to other drivers
Answer: c) Loss of power steering