Air Break Practice Test

Results

#1. In an air brake system, spring brakes are intended for

Skids and emergencies.

Sharp curves and slippery roads.

Skids and parking.

Parking and emergencies.

Trucks and buses must have parking and emergency brakes in addition to the service brakes. The parking and emergency brakes must be held on by mechanical force (because air pressure can leak away). Spring brakes are usually used to meet these needs.