CDL COMBINATION PRACTICE TEST MASSACHUSETTS
11.
If you cannot make a right turn without entering another traffic lane, you should:
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turn wide as you complete the turn.
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swing wide to the left before starting the turn.
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turn wide before you start the turn.
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watch out for vehicles coming toward you and back up for them.
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12.
If you must drive slowly, how should you alert following drivers?
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Flash your brake lights
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Turn on your taillights
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Help them out by signaling when it is safe to pass
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Use your emergency flashers if it is legal
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13.
Do NOT use the parking brakes:
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when you leave your vehicle.
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if the brakes are very hot.
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when you park for less than two hours.
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to test that they work.
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14.
How can you tell if a converter dollie has ABS?
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There is an ABS plaque on the right side of the dolly.
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There is an ABS system on the right side of the dolly.
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There is a red lamp on the left side of the dolly.
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There is a yellow lamp on the left side of the dolly.
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15.
Which of the following is NOT a good rule for using turn signals?
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Signal continuously until you have completed the turn.
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Signal well before you turn.
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Cancel your signal after you have turned.
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Put your turn signal on after the turn.
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16.
If your vehicle thumps or vibrates heavily, it may be a sign that:
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you need to shift up.
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the brakes have failed.
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the engine belt is loose.
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one of the tires has gone flat.
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17.
Radial and bias-ply tires:
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should not be used together.
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should be used together only during bad weather.
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should be used together.
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should be used together only when driving in packed snow.
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18.
The first thing to do when coupling a tractor-semitrailer is to:
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position the tractor.
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lock the trailer brakes.
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inspect the fifth wheel.
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check the trailer height.
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19.
Which of the following is NOT part of the procedure to stop a trailer skid?
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Not using the hand brake
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Using the trailer hand brake to get traction back
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Releasing the brakes
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Recognizing the skid
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20.
Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
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pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
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the parking brake should never used to slow the vehicle.
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shifting into neutral may help slow the vehicle.
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All of the above.
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