IOWA CDL COMBINATION PRACTICE TEST

11. Which of these is NOT part of the basic method for shifting up?
Release the accelerator, push in the clutch and shift to neutral at the same time.
Accelerate while pressing the clutch and turn toward the driver's side.
Push in the clutch and shift to the higher gear at the same time.
12. When the tractor protection valve closes, the trailer _______ brakes will come on.
emergency
parking
service
13. Most truck driver deaths in crashes result from:
driving side-by-side with another truck.
off-tracking.
truck rollovers.
14. For a cargo fire in a box trailer, you should:
open the doors immediately and use the fire extinguisher.
keep the doors shut.
wait 10 minutes before opening the doors.
15. If you have convex mirrors, be aware that:
objects seem closer than they really are.
everything appears smaller in a convex mirror than it would if you were looking at it directly.
in a convex mirror objects appears larger than they really are.
16. What is a pull up when referring to truck driving?
When a driver stops and pulls forward to get a better position.
A driving maneuver used to pull your vehicle over to the side of the road and stop.
A specific maneuver used to decelerate smoothly in the exit lane.
17. When approaching a stopped bus, you must be aware that:
passengers may cross in front of or behind the bus.
passing a stopped bus is illegal.
a student may be driving the bus.
18. If you discover a fire, before opening trailer doors you should:
use the fire extinguisher on the doors.
feel the doors to see if they are hot.
have a helper open the doors.
19. When driving on slippery surfaces, you should:
not pass slower vehicles unless necessary.
change lanes often.
make turns as quickly as possible.
20. You should always try to back toward the driver's side because:
you can watch the rear of your vehicle out the side window.
backing toward the left side is more dangerous.
None of the above.
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