CDL DOUBLES TRIPLES PRACTICE TEST OREGON
11.
If a load is placed on one side of the trailer:
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the steering axle weight will be too light to steer safely.
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your brakes won't work.
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making turns may be easier.
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a rollover is more likely.
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12.
Headache racks:
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protect you from being hit by your cargo.
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help you keep weights within legal limits.
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can blind other drivers.
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None of the above.
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13.
If you go twice as fast, your stopping distance will increase by:
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four times.
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ten times.
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eight times.
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two times.
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14.
What is Gross Vehicle Weight?
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The total weight of a combination of vehicles excluding the load
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The total weight of a single vehicle, including its load
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The total weight of a single vehicle, excluding its load
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The total weight of the cargo
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15.
When you see you will need to slow down, you can warn drivers behind you by:
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tapping the brakes a few times.
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making gestures.
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slamming on the brakes.
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turning on the right turn signal.
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16.
Because of the "crack-the-whip" effect, doubles and triples:
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are more likely to run out of gas than other combination vehicles.
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are more likely to turn over than other combination vehicles.
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are much slower than other combination vehicles.
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can go much faster than other combination vehicles.
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17.
What factors can cause brakes to fade?
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Excessive heat and brakes out of adjustment.
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Slippery surfaces and shaded areas.
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Gravel and tar.
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Dirt roads and in unpaved yards.
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18.
If a load is 10 feet long, the minimum number of tie-downs required is:
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4
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3
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1
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2
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19.
Too much weight on the steering axle can cause:
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hard steering and damage to the steering axle and tires.
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better handling.
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poor traction.
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None of the above.
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20.
Enough tread is especially important in winter conditions. You need at least ________ tread depth on steering axle tires.
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6/24 inch
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4/32 inch
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2/8 inch
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8/32 inch
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