CDL DOUBLES PRACTICE TEST RHODE ISLAND
11.
When coupling double trailers, if the second trailer does not have spring brakes, to set the trailer emergency brakes you should:
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1. Connect the emergency line 2. Drive the tractor close to the trailer 3. Disconnect the emergency line 4. Charge the trailer air tank.
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1. Disconnect the emergency line 2. Drive the tractor close to the trailer 3. Charge the trailer air tank 4. Connect the emergency line.
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1. Drive the tractor close to the trailer 2. Connect the emergency line 3. Charge the trailer air tank 4. Disconnect the emergency line.
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12.
Which of the following road surfaces freezes first?
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Open roads
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Bridges
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Underpasses
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13.
When possible, you should park:
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so you will have to back up when you leave.
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so you will be able to pull forward when you leave.
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on the shoulder.
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14.
The earliest way to recognize that your trailer has started to skid is:
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by checking your mirrors.
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by checking the jackknife sensor.
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by releasing the brakes.
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15.
If you must make an emergency stop, you should:
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apply the brakes as hard as you can to lock them.
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use the hand brake before the brake pedal.
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brake in a way that will keep your vehicle in a straight line.
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16.
ABS helps you:
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decrease your average speed.
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lock your wheels.
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keep the wheels from locking up.
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17.
If you're feeling tired while driving you should:
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drink coffee.
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eat something.
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stop driving and get some rest.
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18.
Engine oil pressure should come up to normal within _________ after the engine is started.
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five minutes
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seconds
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two minutes
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19.
If you go twice as fast, your stopping distance will increase by:
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four times.
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two times.
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eight times.
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20.
Enough tread is especially important in winter conditions. You need at least ________ tread depth on steering axle tires.
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6/24 inch
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2/8 inch
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4/32 inch
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