CDL DOUBLES PRACTICE TEST OHIO
11.
An ABS system:
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requires a change in the way you brake.
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is a safety anti-skid braking system.
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helps increase a vehicle's stopping power.
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12.
At dawn, dusk, in rain or snow, to make yourself easier to see you should:
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use the emergency flashers.
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use the high beams.
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use the low beams.
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13.
If you experience a loss of hydraulic pressure, you should do all of the following except:
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Put the transmission in Neutral
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Pump the brakes
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Downshift
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14.
When driving trucks with trailers, drivers should:
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make quick lane changes.
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push the brake pedal to the floor when braking.
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avoid making sudden movements with the steering wheel.
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15.
If the engine catches fire, you should:
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open the hood as soon as you can.
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turn off the engine as soon as you can.
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avoid shooting foam from the vehicle's underside.
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16.
What should you do if you doubt you have safe space to pass under a low bridge?
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Go slowly, and take another route if you are not sure you can make it.
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If no warnings are posted, assume there is enough clearance under the bridge and proceed slowly.
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Increase the weight of your vehicle to clearing under the bridge.
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17.
With low beams, drivers can see ahead about:
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15 feet
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250 feet
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100 feet
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18.
When you see you will need to slow down, you can warn drivers behind you by:
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tapping the brakes a few times.
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slamming on the brakes.
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turning on the right turn signal.
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19.
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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20.
Which of the following may have reduced the clearances since the heights were posted at bridges and overpasses?
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The weight of a cargo
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Rain
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Repaving of the road
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