Take New York CDL Air Brakes Test 2

QUESTION 1 / 25

Before a vehicle with dual air brakes is driven, pressure of at least ____ should be built up in both braking systems.

Choose one answer below.

A10 psi✓B25 psi✓C50 psi✓D100 psi✓

QUESTION 2 / 25

Dollies equipped with ABS are required to have malfunction lamps located where?

Choose one answer below.

AOn the rear✓BOn the left side✓COn the front✓DOn the top✓

QUESTION 3 / 25

A low air pressure warning signal should activate:

Choose one answer below.

AWhen tank pressure falls below 120 psi.✓BWhen tank pressure falls below 60 psi.✓CWhen tank pressure falls below 10 psi.✓DWhen tank pressure falls below 5 psi.✓

QUESTION 4 / 25

How is the parking brake released?

Choose one answer below.

ABy tapping on the brake pedal three times✓BBy pushing in the brake control knob✓CBy engaging the accelerator✓DBy tapping the accelerator twice✓

QUESTION 5 / 25

To inspect slack adjusters on S-cam brakes, you need to:

Choose one answer below.

APark on a hill and test the brakes.✓BPut on gloves and push in the slack adjusters.✓CRemove the drum and look inside.✓DChock the wheels and disengage the parking brake.✓

QUESTION 6 / 25

To confirm that a trailer has ABS, you can:

Choose one answer below.

ALook under the trailer for wheel speed sensors coming from the back of the brakes.✓BLook under the hood for the ABS sticker.✓CLook at the tires.✓DRemove a tire and look for the ABS sensor on the axle.✓

QUESTION 7 / 25

The application pressure gauge:

Choose one answer below.

AShows how much air pressure is being applied to the brakes.✓BShows the temperature of air being used in the braking system.✓CShows the pressure of the air coming from the compressor.✓DShows the number of times the brakes have been used.✓

QUESTION 8 / 25

To use the stab braking method in an emergency situation, you should:

Choose one answer below.

AApply the brakes completely until the wheels lock up, release the brakes until the wheels start rolling, then repeat the process.✓BApply the brakes about halfway, but keep the wheels rolling.✓CFully apply the brakes, let the wheels lock up, and hold the brake pedal down, keeping the wheels locked until the vehicle stops.✓DApply the emergency brake.✓

QUESTION 9 / 25

Before driving a vehicle with a dual air brake system, you must wait for the air compressor to build a minimum of ____ in both the primary and secondary systems.

Choose one answer below.

A25 psi✓B50 psi✓C75 psi✓D100 psi✓

QUESTION 10 / 25

During an applied leakage test, the maximum leakage rate for a triple combination vehicle is:

Choose one answer below.

A10 psi in a minute.✓B8 psi in a minute.✓C6 psi in a minute.✓D4 psi in a minute.✓

QUESTION 11 / 25

What can happen if the air pressure gets too low in an air brake system?

Choose one answer below.

AThe brakes may squeak.✓BThe brakes may not work.✓CThe brakes may be sluggish.✓DThe brakes will be very sensitive.✓

QUESTION 12 / 25

When the brake pedal is pushed down, air brakes work:

Choose one answer below.

AImmediately.✓BAfter a short delay.✓CAfter about a minute.✓DOnly if it is warm outside.✓

QUESTION 13 / 25

Truck tractors with air brakes that were built on or after March 1, 1997 are equipped with:

Choose one answer below.

AAn extra set of brakes.✓BVoice-activated brakes.✓CCruise control.✓DAnti-Lock Braking Systems (ABS).✓

QUESTION 14 / 25

What color is the low air pressure warning light?

Choose one answer below.

AGreen✓BOrange✓CRed✓DPurple✓

QUESTION 15 / 25

Both systems in a dual air brake systems share:

Choose one answer below.

AAir tanks.✓BHoses.✓CAir lines.✓DAn air compressor.✓

QUESTION 16 / 25

Why do you need to drain air tanks regularly?

Choose one answer below.

ABecause the air gets old and needs to be replaced✓BBecause compressed air contains some water which must be drained from the tanks✓CTo allow for a change in air pressure✓DTo remove bad air from the tanks✓

QUESTION 17 / 25

What do anti-lock brakes do?

Choose one answer below.

AHelp a driver avoid wheel lockup✓BLock up the front wheels✓CPrevent a vehicle from accelerating while traveling uphill✓DPrevent a vehicle from accelerating while traveling downhill✓

QUESTION 18 / 25

On trucks and buses, where are ABS malfunction lamps located?

Choose one answer below.

AOn the driver’s door✓BOn the instrument panel✓COn the outside of the vehicle by the passenger’s door✓DUnder the hood✓

QUESTION 19 / 25

What color are ABS malfunction lamps?

Choose one answer below.

AOrange✓BYellow✓CGreen✓DBlue✓

QUESTION 20 / 25

When operating a vehicle with a dual brake system, a driver should:

Choose one answer below.

ALet the vehicle warm up before driving to ensure that fuel reaches the engine.✓BWait to begin driving until the air compressor builds up a minimum pressure of 100 psi in both the primary and secondary systems.✓CBegin driving just after the vehicle starts.✓DPump the pedal about 20 times to build pressure, then begin driving.✓

QUESTION 21 / 25

A dual air brake system:

Choose one answer below.

AHas a single air brake system, but uses two sets of controls.✓BHas one air brake system for each side of the truck.✓CHas two brakes for each wheel.✓DHas two separate air brake systems, but uses a single set of controls.✓

QUESTION 22 / 25

All air tanks must include:

Choose one answer below.

AA drain valve.✓BA lock.✓CA trap door.✓DA warning sticker.✓

QUESTION 23 / 25

Brake fading is caused when:

Choose one answer below.

ABrakes are not used often enough.✓BBrakes overheat.✓CBrakes are too cold.✓DBrakes are wet.✓

QUESTION 24 / 25

The brake pedal is part of which braking system?

Choose one answer below.

AThe service brake system✓BThe parking brake system✓CThe emergency brake system✓DThe auxiliary brake system✓

QUESTION 25 / 25

When a brake pedal is pressed and the S-cam is turned, the S-cam:

Choose one answer below.

APresses the brake shoes against the inside of the brake drum.✓BTightens the brake drum onto the axle.✓CPresses the brake lining against the wheel.✓DReleases air from the air tanks.✓