SOUTH CAROLINA SCHOOL BUS CDL PRACTICE TEST
11.
Which of the following is NOT true?
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ABS only comes into play when a wheel would have locked up because of over braking.
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ABS won't compensate for bad brakes.
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ABS won't compensate for poor brake maintenance.
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ABS will change the way you normally brake.
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12.
Brake fade results from:
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excessive smoke.
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excessive wear.
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excessive speeding.
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excessive use of the service brakes.
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13.
If your bus is equipped with a roof-mounted strobe light, you should use it:
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when you have limited visibility.
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whenever possible.
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only in an emergency.
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only at night.
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14.
ABS:
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is not required on newer trucks.
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gives you more control when you brake.
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helps increase brake pressure.
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causes your wheels to lock when you break hard.
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15.
When driving in very hot weather, you may have to:
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reduce your speed to prevent overheating.
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watch out for black ice.
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increase your speed until the tires cool off.
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decrease your following distance.
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16.
Before starting down a hill, you should slow down and shift down:
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to a gear that will cause your brakes to overheat.
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to a speed that you can control without using the brakes hard.
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to a gear that will cause your engine to exceed its redline.
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so you can coast downhill.
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17.
If you perform the skills test in a vehicle that is not equipped with air brakes:
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you will be required to take the tank vehicle test.
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you will be required to operate vehicles with air brakes.
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you will be required to operate a CMV without hydraulic brakes.
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you will be restricted from operating vehicles with air brakes.
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18.
If your bus has a manual transmission:
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cross the railroad tracks in a low gear.
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never change gears while crossing railroad tracks.
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at a multiple-track crossing, stop only before the first set of tracks.
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All of the above.
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19.
ABS:
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always shortens your overall stopping distance.
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keeps your wheels from locking up during hard brake applications.
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helps increase brake pressure.
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allows you to drive faster.
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20.
To make the brakes work, air brakes use:
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compressed air.
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nitrogen.
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hydraulic air.
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carbon monoxide.
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