Water in the reservoir is harmful to the air system because?

The only way to be sure your brakes are adjusted properly is?

The final factor which will determine if a vehicle will stop is?

What is the most common cause of loss of effective braking on air equipped vehicles?

If the speed and weight of a vehicle is doubled, how many times must the braking force be increased to stop in the same distance?

Unless a spring brake system has an anti-compounding device, the spring brakes should be released before making a full brake application test because?

What is meant by the term friction?

By what pressure should the low pressure warning device activate?

When should a driver use the manual front wheel limiting valve?

What is the purpose of a relay valve?

Braking systems that have automatic slack adjusters?

The spring brake emergency release system will allow a driver to?

What is the maximum pressure available for a full brake application at any given time?

What is the purpose of a quick release valve?

A quick release valve is sometimes used with spring brakes to?

Belt driven air compressors should have the belts checked for cracks and tension?

The speed at which a vehicle should travel on a downgrade is best determined by?

Compounding of the brakes will result in some vehicles when?

The stopping distance of a vehicle is most affected by?

When checking slack adjuster push rod travel with a pry bar, travel must not exceed?

How can spring brakes be released without the use of air pressure?

While doing an air leak test in a tractor and semi-trailer with maximum air pressure, air loss should not exceed?

Spring brakes are most useful as?

A good way to test the holding power of a spring brake is to?

An automatic front wheel limiting valve is over-ridden when application pressure exceeds?