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UPGRADE TO CDL PREMIUM
1.
Front brake limiting valves were used to:
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reduce your speed so further braking or shifting is not required.
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prevent overheating of the front tires.
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reduce the chance of the front wheels skidding on slippery surfaces.
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2.
You should NOT use the parking brakes if:
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the brakes are cold.
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the brakes are very hot.
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the brakes are too dry.
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3.
A driver distraction is anything that takes your attention away from driving, such as:
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pedestrians.
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adjusting the radio.
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All of the above.
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4.
The air storage tanks:
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are used to hold compressed air.
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stop the compressor from pumping air.
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are connected to the engine through gears or a v-belt.
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5.
Some air brake systems have an alcohol evaporator to:
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prevent ice from forming in the brake system.
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reduce the danger of slipping.
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reduce the stopping power of the vehicle.
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6.
Axle weight is:
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the weight transmitted to the ground by one axle or one set of axles.
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the maximum safe weight your tires can carry at a specified pressure.
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the weight of all the axles added together.
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7.
To check the slack adjusters:
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check the air hoses connected to the brake chambers to make sure they aren't cut or worn.
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Park on level ground and chock the wheels, release the parking brakes and pull hard on each slack adjuster. The slack adjuster shouldn't move more than one inch.
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park downhill and see if the vehicle rolls.
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8.
The parking brake:
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should be used when driving in bad weather.
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should be used when you need to apply the brakes firmly.
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should be used whenever you park.
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9.
Which of the following is NOT a warning sign of fatigue?
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Heavy eyelids
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Frequent blinking
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Driving at the speed of the traffic
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10.
When the wheels of a trailer lock up:
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the vehicle will gradually come to a complete stop.
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the trailer will tend to swing around.
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ABS will increase stopping power.
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