PA CDL AIR BRAKES PRACTICE TEST

16. When driving in hot weather, drivers should inspect tires:
every 2 hours or every 100 miles.
every 3 hours or every 75 miles.
every hour or every 50 miles.
every 4 hours or every 200 miles.
17. The service brake applies and releases:
the parking brake when you use the parking brake control.
the brake when you use the brake pedal during normal driving.
the brake in an emergency situation.
None of the above.
18. When you apply the brakes, the brake shoes and linings are pushed against:
slack adjusters.
the air compressor.
the s-cam.
the inside of the brake drum.
19. You must take the CDL skills tests in the type of vehicle for which you wish to be licensed. If your test vehicle does not have air brakes:
you won't receive a CDL.
you'll need to take another knowledge test about air brakes.
you'll have to immediately retake your test using another vehicle.
you will be restricted to driving vehicles without air brakes.
20. Some vehicles have a separate air tank which can be used to:
hold the vehicle or combination of vehicles stationary.
release the spring brakes.
unload cargo or passengers.
turn on the 4-way emergency flashers.
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