AR CDL PRACTICE TEST - GENERAL KNOWLEDGE
41.
A passive railroad crossing is one that:
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requires you to stop and wait until the traffic control device installed at the crossing tells you to proceed.
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does not have any type of traffic control device.
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has a traffic control device installed at the crossing to regulate traffic.
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has at least two traffic control devices installed at the crossing to regulate traffic.
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42.
What is a "header board"?
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The back door of the cargo compartment.
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A safety device that protects you from your cargo in case of an accident.
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Another term for the brake camshaft.
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The pressure gauge connected to the air tank.
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43.
Driving dry bulk tanks requires special care. Why?
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They have a high center of gravity.
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The load can shift.
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Their weight and size can make it more difficult to stop quickly.
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All of the above.
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44.
Which of these statements is true?
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Dual tires that come in contact with each other provide better traction.
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A tread depth of 2/32 of an inch is safe for steering axle tires.
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Tires of mismatched sizes can used on the same vehicle.
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Radial and bias-ply tires should not be used together on the same vehicle.
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45.
Why should you be in the proper gear before starting down a hill?
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changing gears on a hill is illegal.
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gravity can cause the speed of your vehicle to increase.
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it will help the vehicle be more stable while turning.
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it will help you go faster when you reach the bottom of the hill.
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46.
When backing, it is best to:
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back toward the passenger's side when possible.
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use a helper whenever possible.
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try to back in the direction of the drift.
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use only the passenger's side mirror.
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47.
If you must stop on or by a one-way or divided highway, you must place warning devices ___ feet, ___ feet, and ___ feet toward the approaching traffic.
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15; 150; 300
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5; 50; 100
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10; 100; 200
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20; 200; 400
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48.
The air tanks should be drained completely to remove:
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the radiator cap.
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air.
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carbon monoxide.
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water and oil.
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49.
Serious traffic violations include:
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excessive speeding.
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driving a CMV without obtaining a CDL.
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erratic lane changes.
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All of the above.
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50.
When going down long, steep downgrades, you should:
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rely solely on engine braking to reduce your speed.
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only use the brakes.
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downshifting and then use the brakes.
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try not to use the brakes.
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