CDL COMBINATION PRACTICE TEST ILLINOIS
11.
The tire load rating is stated:
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on the side of each tire.
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on the dashboard.
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inside the suspension system.
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on each axle.
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12.
If you smell exhaust fumes in the cab, you should:
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wait for the next stop, then inspect your vehicle.
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remember to conduct a post-trip inspection.
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stop immediately.
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open the windows.
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13.
Radial and bias-ply tires:
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should not be used together.
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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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should be used together only during bad weather.
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14.
After the pre-trip inspection, drivers should inspect their cargo and its securing devices again within ________ after beginning the trip.
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50 miles
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20 miles
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25 miles
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two hours
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15.
Which of the following will NOT help you prevent rollover?
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Keeping the cargo as close to the ground as possible.
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Using the controlled braking method.
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Driving slowly around turns.
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All of the above.
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16.
At passive railroad crossings, even if there are active railroad signals that indicate the tracks are clear, you must _________ to be sure it is safe to proceed.
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listen, look and stop
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stop, look, and listen
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go, stop and listen
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go, look and put the transmission in neutral
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17.
Broken suspension parts can be very dangerous. When inspecting your vehicle for suspension system defects, look for:
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Broken leaves in a multi-leaf spring.
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Damaged air suspension systems.
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Spring hangers that allow movement of axle from proper position.
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All of the above.
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18.
When you park trailers without spring brakes, you should use wheel chocks:
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to keep the trailer from moving.
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to prevent overheating.
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to prevent air from escaping.
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to prevent the transmission from shifting up.
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19.
In vehicles with air brakes, the tractor protection valve:
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carries air, which is controlled by the trailer hand brake or the foot brake.
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keeps air in the tractor or truck brake system.
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is used to connect the service and emergency air lines from the truck/tractor to the trailer.
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provides the air pressure used to operate trailer brakes.
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20.
Antifreeze:
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doesn't help the engine in any way.
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helps the engine only when the temperature is below freezing.
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helps the engine under hot conditions as well as cold conditions.
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helps the engine only under hot conditions.
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