CDL DOUBLES PRACTICE TEST LOUISIANA
11.
On front tires, tread should be at least:
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4/16 inch
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1/16 inch
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2/32 inch
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4/32 inch
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12.
When driving in hot weather, drivers should inspect tires:
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every 4 hours or every 200 miles.
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every hour or every 50 miles.
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every 3 hours or every 75 miles.
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every 2 hours or every 100 miles.
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13.
You should do an after-trip inspection:
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after each stop.
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at least once a week.
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after each trip.
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once a month.
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14.
Glad hands are:
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warning devices.
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electronic devices.
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coupling devices.
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securement devices.
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15.
If you doubt you have enough space to pass under a bridge, you should:
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turn on your 4-way emergency flashers.
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turn on your headlights.
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drive faster.
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go slowly.
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16.
You should always adjust your speed to be able to stop within:
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50 feet.
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the length of your vehicle.
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30 feet.
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the distance you can see ahead.
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17.
With an engine fire, you should NOT:
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turn the engine off as soon as possible.
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open the hood.
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shoot foam from the vehicle’s underside.
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None of the above.
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18.
You hear a loud "bang" which sounds like a tire blowout. You should:
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check the tires at the next stop.
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keep driving as normal.
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assume you
have a tire failure.
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inspect your tires with your mirrors.
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19.
When more cargo is piled up in a truck, the center of gravity moves:
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higher up from the road.
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to the right side of the truck.
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to the left side of the truck.
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closer to the ground.
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20.
The best way to recognize that your trailer has started to skid is:
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by feeling the brakes come on.
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by recognizing tire failure.
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by opening the window and feeling the front of the mirror.
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by seeing it in your mirrors.
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