Take Indiana CDL Air Brakes Test 2

QUESTION 1 / 25

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

Choose one answer below.

AAn Anti-Lock Braking System (ABS).✓BBluetooth.✓CGPS.✓DA rear back-up camera.✓

QUESTION 2 / 25

When inspecting your brakes, a slack adjuster should move ____ from where it is attached to the push rod.

Choose one answer below.

AAt least three inches✓BMore than two inches✓CUp to five inches✓DNo more than one inch✓

QUESTION 3 / 25

Water and compressor oil are usually found in the compressed air within an air brake system. Water and compressor oil:

Choose one answer below.

AAre necessary for the proper function of the air brake system.✓BShould be added if low.✓CShould be removed regularly.✓DAre not concerns.✓

QUESTION 4 / 25

What is removed when an air tank is drained?

Choose one answer below.

AWater and oil✓BAmmonia✓CWood✓DChlorine✓

QUESTION 5 / 25

To stop a vehicle using air brakes:

Choose one answer below.

AThe brake pedal should be pressed.✓BThe brake pedal should be lifted.✓CThe brake knob should be pulled out.✓DThe brake knob should be pushed in.✓

QUESTION 6 / 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 7 / 25

Air tank drains:

Choose one answer below.

AAllow rain water to enter the tanks.✓BAre used to drain water and oil from the air tanks.✓CShould never be opened.✓DMust remain open while driving.✓

QUESTION 8 / 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 9 / 25

A tank endorsement is:

Choose one answer below.

AOnly required when transporting gases.✓BOnly required when transporting liquids.✓CRequired to transport both liquids and gases.✓DOptional when transporting hazardous materials.✓

QUESTION 10 / 25

On a truck with air brakes, the braking system’s air compressor:

Choose one answer below.

APumps air into the air storage tanks.✓BFills the tires.✓CMoves air to the back of the truck.✓DCleans the brakes.✓

QUESTION 11 / 25

An air brake-equipped vehicle traveling at a speed of 55 mph under ideal driving conditions will need approximately ____ to come to a complete stop.

Choose one answer below.

A100 feet✓B250 feet✓C300 feet✓D450 feet✓

QUESTION 12 / 25

To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:

Choose one answer below.

ASet the control to normal.✓BSet the control to the off position.✓CSet the control to neutral.✓DKeep the control at the halfway mark.✓

QUESTION 13 / 25

During a static leakage test, the maximum leakage rate for a double combination vehicle is:

Choose one answer below.

A3 psi in one minute.✓B6 psi in one minute.✓C8 psi in one minute.✓D4 psi in one minute.✓

QUESTION 14 / 25

To stop in a vehicle that uses air brakes, the driver should:

Choose one answer below.

APull the air brake lever.✓BEngage the brake lever.✓CPush the brake pedal down.✓DPull the brake pedal up.✓

QUESTION 15 / 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 16 / 25

Pressing and releasing a brake pedal unnecessarily can:

Choose one answer below.

ARelease air faster than it can be replaced.✓BAdd more air to the braking system.✓CMake the brake pedal more sensitive.✓DCreate a loud noise.✓

QUESTION 17 / 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 18 / 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 19 / 25

During a walk-around inspection, ensure there are no cracks on the brake drums that are more than ____ of the width of the friction area.

Choose one answer below.

AOne half✓BOne quarter✓COne third✓DOne tenth✓

QUESTION 20 / 25

The parking brake should be:

Choose one answer below.

AUsed whenever you park the vehicle.✓BUsed while driving.✓CSet when driving in bad weather.✓DUsed to stop the vehicle in normal driving.✓

QUESTION 21 / 25

The emergency brake system uses:

Choose one answer below.

AOnly parts of the parking brake system.✓BOnly parts of the service brake system.✓CParts of both the parking and service brake systems.✓DOnly parts unique to the emergency brake system.✓

QUESTION 22 / 25

If the air pressure warning light comes on, you should:

Choose one answer below.

AContinue driving normally.✓BActivate your hazard lights and continue driving.✓CCall the local law enforcement agency.✓DSafely exit the roadway and stop.✓

QUESTION 23 / 25

Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when:

Choose one answer below.

AAir pressure falls below 45 psi.✓BAir pressure falls below 20 psi.✓CDriving downhill.✓DDriving uphill.✓

QUESTION 24 / 25

If the low pressure warning light comes on while you are driving:

Choose one answer below.

ABraking will only be possible if there is still enough air in the tanks.✓BYou can apply the brakes 14 times before the air in the system runs out.✓CYou should continue to drive normally and check the brake system when it is convenient.✓DYou should stay at least 100 feet away from other vehicles.✓

QUESTION 25 / 25

If a vehicle has air brakes, the air compressor drive belt should be checked before each drive. In what condition should the belt be?

Choose one answer below.

ALoose✓BTight✓CCracked✓DBumpy✓