DOUBLES TRIPLES TEST TN - CDL PRACTICE TEST
11.
Another name for front-end header boards is:
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cargo stopper.
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head belt.
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headache racks.
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containerized racks.
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12.
You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
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maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
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apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
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apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
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increase your speed to approximately 45 mph, and then apply release the brakes.
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13.
You are driving a vehicle with air brakes when the low air pressure warning light and buzzer come on. You should:
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slow down and test your brakes.
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pull off the road and stop immediately.
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activate your hazard lights and drive to the nearest place where you can stop.
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apply the brakes as hard as you can.
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14.
When driving in hot weather, drivers should inspect tires:
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every 2 hours or every 100 miles.
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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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15.
Doubles:
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are easier to drive than straight trucks.
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are less likely to rollover than straight trucks.
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require more reaction time than straight trucks.
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None of the above.
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16.
You must have at least 4/32 inch tread depth in every major groove on front tires and at least ___ inch on other tires.
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2/32
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3/32
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1/32
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4/32
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17.
Air tanks usually hold enough compressed air to allow the brakes to be used _________ even if the compressor stops working.
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for one stop
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several times
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for 3 days
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for one day
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18.
Brake lag is:
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the time required for the air brakes to work after the brake pedal is pushed.
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the distance your vehicle will continue to travel, in ideal conditions, before you hit the brakes.
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the distance your vehicle will travel, in ideal conditions, while you are braking.
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the amount of air pressure required to stop the vehicle.
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19.
ABS helps you:
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stop faster.
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drive faster.
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brake harder.
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None of the above.
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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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