Brake System Functionality Quiz

You should know that your brakes are fading when?

If the spring brakes are on, you should push the brake pedal.

Repeatedly pressing and releasing the brake pedal may result in?

The driver must be able to see a low pressure warning which comes on before pressure in the service air tank falls below?

If your truck or bus has dual parking control valves, you can use pressure from a separate tank to?

The brake pedal in an air brake system controls?

To check the free play of manual slack adjusters of S-Cam brakes, you should?

Parking or emergency brakes of trucks and buses can be legally held on by _____ pressure.

Emergency stab braking is when you?

The most common type of foundation brake found on heavy vehicles is the?

If your truck has a dual air system and one of the systems is low on pressure,?

The most important thing to do when a low pressure warning light comes on is to?

With air brake equipped vehicles, the parking brakes should be used anytime the vehicle is parked.

The air compressor governor controls?

The stop light switch?

For air brake systems in good condition, the air compressor should start pumping at about _____ psi.

The air loss rate for a straight truck or bus with the engine off and the parking brakes off and the service brakes on should not be more than _____ psi in one minute.

The braking power of the spring brakes depends on?

How should you check spring brakes application when air pressure drops below a certain level?

If you are driving down a steep grade and have reached a safe speed of 40 mph, you would apply the service brakes until your speed drops to _____ mph.

The air brake lag distance at 55 mph on dry pavement adds about _____ feet to your stopping distance.

How should you check that your service brakes are working properly?

Emergency controlled braking is when you?

Which of these is not a proper time to apply the parking brake?

All air brakes equipped vehicles have a supply pressure gauge.

If air pressure does NOT build up to normal within the correct amount of time?

Excessive use of the service brakes results in over heating which can lead to?

The proper method of braking when going down long and or steep grades, after selecting the proper gear is to brake until your speed is about _____ mph below your 'safe' speed then release your brakes.

Under normal conditions in order to engage the parking brake the driver must first _____ the air out.