WY CDL AIR BRAKES PRACTICE TEST

16. You should drain the air tanks completely. If water and oil collect in the air tanks:
your brakes could become hard to press.
your brakes could fail.
your brakes could heat up.
None of the above.
17. The ABS malfunction lamp on the instrument panel is:
Blue
Orange
Red
Yellow
18. You are driving on a steep downgrade. If your safe speed is 35 mph, you should apply the brakes when your speed reaches:
25 mph
35 mph
45 mph
30 mph
19. Most heavy vehicles require ________ change gears.
triple shifting
double shifting
double clutching
single clutching
20. You should drain your air tanks:
at the beginning of each trip.
at the end of each working day.
at least once a week.
every month.
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