DE CDL PRACTICE TEST - GENERAL KNOWLEDGE

31. Hydroplaning:
never occurs at speeds below 40 mph.
only occurs at extremely high speeds.
only happens when tire pressure is higher than normal.
can occur at speeds as low as 30 mph.
32. Perception Distance + Reaction Distance + Brake Lag Distance + Braking Distance = ?
Total Stopping Distance
Partial Stopping Distance
Stopping Distance - (minus) Brake Fade Distance
Total Air Pressure
33. Which of the following factors is NOT used to determine your safe speed when going down a long steep downgrade?
Time of day
Length and steepness of grade
Weather
Total weight of the vehicle and cargo
34. When inspecting the cargo, make sure it is:
secured properly for the first 50 miles after beginning a trip.
not overloaded.
piled up.
All of the above.
35. When you have to back, you should always try to back toward the driver's side. Why?
Backing toward the left side is more dangerous.
You can watch the front of your vehicle by looking out the side window.
You can see better and watch the rear of your vehicle by looking out the side window.
All of the above.
36. Federal, State, and local regulations concerning commercial vehicle weight, securing cargo, and covering loads vary widely. You should obey:
Federal regulations
Local regulations
State regulations
All of the above.
37. A burning tire must be:
cooled with water.
covered with cloth.
immediately removed from the vehicle.
None of the above.
38. An empty truck requires _________ a full truck.
the same stopping distance as
a greater stopping distance than
less stopping distance than
This is irrelevant.
39. If you become drowsy while driving, you should:
take a break.
drink plenty of coffee.
open the windows to get some fresh air.
try to fight it.
40. When you need to brake, you should warn the drivers behind:
by making gestures.
by changing lanes.
by flashing your brake lights.
by turning on the 4-way emergency flashers.
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