CDL

Passenger Bus Inspection

Bus inspection

General inspection and brakes

Air Brakes

General knowable brakes test

100

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

Answer C) 11 hours

100

What should be checked to ensure proper braking at a stop?
A) The door closing mechanism
B) The parking brake
C) The service brake

✅ Answer: C) The service brake

100

Which part of the bus must be checked to ensure it provides a firm grip for passengers?
A) The windshield wipers
B) The step handrails
C) Floor

✅ Answer: B) The step handrails

100

At what pressure should the emergency brake valves pop out?
A) 20-45 psi
B) 55-70 psi
C) 20-35 psi

✅ Answer: A) 20-45 psi

100

Rust around a lug nut indicates:
A) No danger is present, the wheel just needs cleaning
B) A loose lug nut
C) The lug nut needs to be replaced

✅ Answer: B) A loose lug nut

200

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) Mirrors

200

Which of the following is true about emergency exits on a passenger bus?
A) They must be labeled and operate smoothly.
B) They are only required in the rear of the bus.
C) They require inspection 2 times a year

✅ Answer: A) They must be labeled and operate smoothly.

200

What should the driver inspect to ensure proper exterior visibility at night?
A) Clean windshield
B) The vehicle’s lights and reflectors
C) The steering wheel alignment

✅ Answer: B) The vehicle’s lights and reflectors

200

How is the air leakage rate test performed?
A) By fully applying the foot brake and holding it for one minute
B) By checking the ABS warning light
C) By driving at 10 mph and braking

✅ Answer: A) By fully applying the foot brake and holding it for one minute

200

The braking power of the spring brakes:
A) Increases when the service brakes are hot
B) Isn’t affected by the condition of the service brakes
C) Depends on the service brakes being in adjustment

✅ Answer: C) Depends on the service brakes being in adjustment

300

Which system provides heat for passengers and prevents windshield fogging in cold weather
A) Cooling system
B) Heater and defroster
C) Power steering

- ✅ Answer: B) Heater and defroster

300

What should be inspected for leaks and secure mounting?
A) The steering wheel
B) The fuel tank
C) The seat belts

- ✅ Answer: B) The fuel tank

300

Which of the following is true about the battery and electrical system?
A) It should be securely mounted and free of corrosion.
B) It only needs inspection when warning lights appear.
C) It does not require maintenance checks.

✅ Answer: A) It should be securely mounted and free of corrosion.

300

What should happen when the driver applies the service brake at 5 mph?
A) The bus should stop without pulling to one side
B) The emergency brakes should activate
C) The air pressure gauge should reset

✅ Answer: A) The bus should stop without pulling to one side

300

Your brakes are fading when:
A) You have to push harder and harder to stop on a downgrade
B) The brake pedal feels firm
C) Releasing the brake pedal increases speed

✅ Answer: A) You have to push harder and harder to stop on a downgrade

400

Which emergency equipment must be securely mounted and fully charged?
A) Fire extinguisher
B) Emergency flares
C) First aid kit

✅ Answer: A) Fire extinguisher

400

Which statement about windshield wipers is correct?
A) They must be secure, undamaged, and operate smoothly.
B) They only need to be inspected during winter months.
C) They do not require washer fluid to function properly.

✅ Answer: A) They must be secure, undamaged, and operate smoothly.

400

What must be checked to ensure air pressure reaches the correct level before releasing the parking brake?
A) Air pressure gauge
B) Coolant temperature gauge
C) Fuel gauge

✅ Answer: A) Air pressure gauge

400

Most serious vehicle skids result from:
A) Driving too fast for road conditions
B) Poorly adjusted brakes
C) Bad tires

✅ Answer: A) Driving too fast for road conditions

400

If your bus has an emergency exit door, it must:
A) Be free to open for fresh air
B) Be closed when operating the bus
C) Always have a red door light on

✅ Answer: B) Be closed when operating the bus

500

Why must passenger seats be inspected?
A) To ensure they are properly attached and free of damage
B) To check for correct color coordination
C) To verify they are adjustable

✅ Answer: A) To ensure they are properly attached and free of damage

500

Why should the driver inspect the floor of the bus?
A) To check for loose objects or hazards
B) To confirm the color of the flooring
C) To ensure it matches the seats

✅ Answer: A) To check for loose objects or hazards

500

Which system activates when air pressure drops below 55 psi?
A) ABS warning light
B) Low air pressure warning system
C) Transmission fluid warning

✅ Answer: B) Low air pressure warning system

500

If you're driving a slow-moving vehicle on a two-lane highway, you must pull off at the first safe turnout if the number of vehicles behind you is:
A) 5 or more
B) 3 or more
C) 7 or more

✅ Answer: A) 5 or more

500

The most common bus collisions happen at:
A) Intersections
B) Stop signs
C) Railroad crossings

✅ Answer: A) Intersections

600

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

600

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

600

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

600

What action should you take if your bus stalls on railroad tracks?
A) Evacuate all passengers immediately
B) Stay inside and call for help
C) Check for trains before exiting

✅ Answer: A) Evacuate all passengers immediately

600

Empty trucks:
A) Need less space to stop
B) Require more stopping distance
C) Have better traction than full ones

✅ Answer: B) Require more stopping distance

700

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

700

What 4 air brake checks need to be done?

Air Gauge & Governor Cutoff Check, Warning Devices, Air Leakage Rate Test, Emergency Brake Test
Warning Devices, Brake Application Test, Emergency Brake Test, Service Brake Test
Governor Cutoff Check, Tire Pressure Check, Warning Devices, Emergency Brake Test
Warning Devices, Emergency Brake Test, Brake Fluid Level Check, Air Gauge & Governor Test

Answer- A) Air Gauge & Governor Cutoff Check, Warning Devices, Air Leakage Rate Test, Emergency Brake Test

700

The tire tread depth on commercial vehicle must be what?

Front 2/32, Rear 4/32
Front and Rear 4/32
Front and Read 2/32
Front 4/32, Rear 2/32

Answer - D) Front 4/32, Rear 2/32

700

Loss of air pressure when working with brake lines/hoses/leaks are ?

May cause brake fade.
May cause wheel lockup.
May cause uneven brake wear.
May cause overheating of the brake system.

Answer – B) May cause wheel lockup.

700

To test the service brakes you must:

Pull forward at 5mph, apply brakes suddenly, come to an abrupt stop.
Pull forward at 5mph, apply brakes firmly, come to a complete stop.
Pull forward at 5mph, apply brakes, come to a complete stop.
Pull forward at 5mph, apply brakes softly, coast to a stop.

Answer: C) Pull forward at 5mph, apply brakes, come to a complete stop

800

The Emergency Kit must consist of what items:

3 red reflective triangles (6 fuses/3 liquid), discharged extinguishers, spare fuses/circuit breakers
3 red reflective triangles (3 fuses/3 liquid), discharged extinguishers, spare fuses/circuit breakers
3 red reflective triangles (3 fuses/6 liquid), charged extinguishers, spare fuses/circuit breaker
3 red reflective triangles (6 fuses/3 liquid), charged extinguishers, spare fuses/circuit breaker

D) Answer- 3 red reflective triangles (6 fuses/3 liquid), charged extinguishers, spare fuses/circuit breaker

800

What happens when you press the brake pedal with the spring brakes engaged?

A. The spring brakes will release
B. Nothing, as the spring brakes override the service brakes
C. The vehicle will move forward
D. The air pressure will increase

Answer: B
Explanation: Spring brakes are a fail-safe mechanism held off by air pressure. If they’re engaged (e.g., due to low pressure), pressing the pedal won’t release them or apply additional braking.

800

Stop before a railroad crossing if your vehicle Carries any amount of chlorine

a) True

b) False

Answer: a) True

800

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

800

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