Air Brakes - Rhode Island Cdl

1 . On flat surfaces, wheel chocks:

Can be used to prevent a parked vehicle from moving. Make it easier for a parked vehicle to roll. Should only be used on the front driver's side tire. Click Here Full Cheat Sheet

2 . The air compressor is connected to the:

Transmission. Engine. Radiator. Take a FREE Practice Test Now

3 . Air storage tanks:

Are not allowed on a vehicle. Hold compressed air for the brakes. Should be drained of excess air after every trip. Take a FREE Practice Test Now

4 . An emergency brake must be controlled by:

Mechanical force. Air pressure. Gravity. Take a FREE Practice Test Now

5 . During an applied leakage test, the maximum leakage rate for a triple combination vehicle is ____ in a minute.

2 psi 4 psi 6 psi Click Here Full Cheat Sheet

6 . A safety valve is set to open at ____ pounds per square inch (psi).

100 150 200 Take a FREE Practice Test Now

7 . Why should you regularly drain the air tanks?

Because the air gets old and needs to be replaced Because compressed air contains some water and the water collects in the tanks To allow for a change in pressure Take a FREE Practice Test Now

8 . What kind of force do emergency brakes use?

Air pressure Mechanical Heavy Take a FREE Practice Test Now

9 . A driver can rely on front wheel braking to work:

On dry roadways only. Under all conditions. Under all conditions, except for snow. Click Here Full Cheat Sheet

10 . What does an air compressor do in an air brake system?

It pumps air into the air storage tanks. It fills the tires. It moves air to the back of the truck. Take a FREE Practice Test Now

11 . The air storage tanks:

Hold only enough air for one braking cycle. Hold enough air for the brakes to be used several times if the compressor stops working. Do not hold air unless there is an emergency. Take a FREE Practice Test Now

12 . Vehicles equipped with Anti-Lock Braking Systems (ABS) have ____ malfunction lamps to indicate when the ABS is not working.

Green Blue Yellow Take a FREE Practice Test Now

13 . An application pressure gauge shows:

How much air pressure is being applied to the brakes. How much air pressure is available. How much air pressure is required to stop a vehicle. Click Here Full Cheat Sheet

Study tip: Reduce your study time from hours to minutes with a DMV exam “Cheat Sheet” 99.2% of people who use the cheat sheet pass the FIRST TIME Click Here Full Cheat Sheet

14 . You should ____ if the low pressure warning signal activates while you are driving.

Stop where you are and park Exit the roadway as soon as safely possible Continue driving normally Take a FREE Practice Test Now

15 . A ____ allows a driver to gradually apply spring brakes.

Modulating control valve Trailer air supply control Relay valve Take a FREE Practice Test Now

16 . When leaving your vehicle unattended:

The parking brake should be used. The parking brake only needs to be used if the vehicle is parked on a slope. The parking brake should not be used, as it can damage the tires. Take a FREE Practice Test Now

17 . A wig wag is:

A low pressure warning device. A tube that carries air to the brakes. A type of air brake system. Click Here Full Cheat Sheet

18 . The leakage rate for a triple combination vehicle with air brakes should be no more than ____ in one minute during a static leakage test.

8 psi 5 psi 3 psi Take a FREE Practice Test Now

19 . Once the air tanks are at an air pressure level of 125 psi, the air compressor governor will:

Stop the compressor from pumping air. Release air from the tanks. Begin pumping air into the tanks. Take a FREE Practice Test Now

20 . Truck tractors with air brakes built on or after March 1, 1997 must have:

An Anti-Lock Braking System (ABS). Bluetooth. A GPS. Take a FREE Practice Test Now

21 . ____ make up the emergency brake system.

Only parts of the parking brake system Only parts of the service brake system Parts of the parking and service brake systems Click Here Full Cheat Sheet

22 . The parking brake in a newer vehicle is applied by:

Moving a lever to the right. Pushing a yellow, diamond-shaped knob. Pulling a yellow, diamond-shaped knob. Take a FREE Practice Test Now

23 . Brakes can get out of adjustment quickly, especially:

If they are hot. In the winter time. If they are used frequently. Take a FREE Practice Test Now

24 . If using spring brakes when hauling a heavy load, a complete stop will:

Be impossible. Take a long time. Take a short amount of time. Take a FREE Practice Test Now

25 . While driving, ____ generally holds spring brakes in place.

Air pressure Electricity Gasoline Click Here Full Cheat Sheet