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36 Cards in this Set
- Front
- Back
Side-to-side surge can cause:
• Uneven tire wear • Rollover • Tire failure |
Rollover
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When you load the small tanks of a cargo tank equipped with bulkheads, you should check your:
• Power usage • Air to fuel ration • Outage allowance • Weight distribution |
Weight distribution
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When transporting cargo, drivers of tank vehicles must inspect the cargo within the first ___ miles of a trip.
• 25 • 75 • 125 • 250 |
25
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Baffled liquid tanks have bulkheads:
• That decrease the amount of side-to-side surge • That separate the liquids from different areas of the tank • With holes in them that let liquid flow through them • To help prevent uneven cargo expansion |
To help prevent uneven cargo expansion
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A tank must be used to carry any liquid or liquid gas in a tank of ___ gallons.
• 500 • 750 • 1000 • 250 |
1000
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If you steer a tank vehicle quickly while braking you:
• Will decrease your safe stopping distance • Can reduce the amount of liquid surge • May cause the vehicle to rollover • Cause the vehicle to slide forward |
May cause the vehicle to rollover
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Liquid surge:
• Is only a problem when driving on slippery roads • Can effect the handling of your tuck • Should never occur in a tank that is properly loaded • Should never occur in baffled liquid tanks |
Can effect the handling of your tuck
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If an oncoming vehicle drifts into your lane, you should:
• Use no less than one full turn of the steering wheel to avoid it • Never lead the roadway • Try to stop rather than turn • Move to your right |
Move to your right
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You are driving on a clear night with your low beam headlights on. If your headlights let you see about 250 feet ahead of you, adjust your speed so that you can stop within about ___ feet.
• 100 • 250 • 500 • 50 |
250
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Hauling liquids in tank vehicles requires special care for two reasons. One reason is:
• Liquid surge • Extreme weight • Uneven expansion • Wide center of gravity |
Liquid surge
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Smooth bore tanks:
• Have no baffles in them to slow down the surge of liquids • Allow you to take turns at the posted speed limit • Have more baffles in them than conventional tank trucks • Are very difficult to clean |
Have no baffles in them to slow down the surge of liquids
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Tankers carrying liquids should take curves ___ the posted speed.
• At • Slightly quicker than • Well below • 2 to 5 mph below |
Well below
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The amount of liquid you may put into a tank:
• Depends on the liquid's center of gravity • Should always dill it to reduce surge • May be required to be less than full to stay within weight limits • Should be half of maximum capacity to allow for outage |
May be required to be less than full to stay within weight limits
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You are driving a tank truck and the front wheels begin to skid. Which of these is most likely to occur?
• The surge will push you sideways • Liquid surge pull the tank from the truck • The truck will roll over • You will continue in a straight line and keep moving forward no matter how you steer |
You will continue in a straight line and keep moving forward no matter how you steer
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Forward to back surge can:
• Cause a jackknife • Cause a truck to roll over • Decrease your mileage • Shove a stopped truck into an intersection |
Shove a stopped truck into an intersection
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If your drive wheels begin to skid when you are pulling a tank trailer:
• You should immediately apply full pressure to your brakes • Your vehicle may jackknife • You trailer should stay in line with the tractor • The vehicle may roll over |
You trailer should stay in line with the tractor
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What does liquid surge do to the handling of a tanker?
• It lets you turn corners tighter • It makes it roll easier • It can move the truck in the direction the liquid waves move • It can cause a jackknife |
It can move the truck in the direction the liquid waves move
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The best way to take a curve is to slow to a safe speed before entering the curve, then ___ as you go through it.
• Maintain speed • Coast • Brake lightly • Accelerate slightly |
Accelerate slightly
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Which one of these statements about tank vehicles is true?
• Fully loaded tank vehicles take longer to stop than empty ones. • You should use only the emergency brakes to stop a tanker in order to avoid a crash • The posted speed for a curve may be too fast for a tank vehicle • If your drive wheels begin to skid, the vehicle will always rollover |
The posted speed for a curve may be too fast for a tank vehicle
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As compared to normal trucks, loaded tank vehicles have ___ center of gravity.
• A lower • A higher • The same • A denser |
A higher
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When your vehicle goes into a front-wheel skid, it is a sign that you:
• Have to heavy a load • Should have waited for better weather • Have been driving too fast for conditions • Have been braking too hard |
Have been driving too fast for conditions
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Which of these statements about emergency steering is true?
• If an oncoming driver drifts into your lane, a move to your right may be best • You can almost always stop more quickly than you can turn • You can steer more quickly and safely with one hand than two • Stopping is always the safest thing to do in an emergency |
If an oncoming driver drifts into your lane, a move to your right may be best
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Baffles in liquid cargo tanks do NOT usually prevent ___ surge.
• Any type of • Top-to-bottom • Front-to-back • Side-to-side |
Side-to-side
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You are driving a tank vehicle and you must stop quickly to avoid a crash. You should:
• Use light, steady pressure on the brake pedal • Push the brake pedal as hard as you can and hold it there • Use controlled or stab braking • Downshift and move right |
Use controlled or stab braking
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If you are driving a tanker and need to steer quickly to avoid a hazard, you:
• Will find that tankers are easier to contester than most vehicles • Should not apply the brakes while turning • Should never leave the roadway • Can steer more quickly and safely if you hold the wheel with one hand |
Should not apply the brakes while turning
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Except when you are loading or unloading a cargo tank, the liquid discharge valves should always be:
• Open • Closed • Unlatched • Grounded |
Closed
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Which of these is true?
• You should never load a cargo tank totally full • All liquids expand by the same amount as they warm • Half full cargo tanks are more stable than empty tanks • Liquid surge results |
You should never load a cargo tank totally full
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Empty trucks:
• Have better traction when stopping than full ones • Require greater stopping distances than full ones • Need less space ahead than full ones • Can stop in shorter distances than full ones |
Require greater stopping distances than full ones
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Before loading, unloading, or driving a tanker, the first thing you should do is:
• Properly secure all the baffles • Inspect the vehicle • Make sure you have all the necessary placards • Make sure the vehicle operator's manual is in the vehicle |
Inspect the vehicle
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Which of these statements about stopping distance and speed is true?
• You need about two times as much stopping distance at 40 mph as at 20 mph • The heaviest the vehicle, the shorter the stopping distance • At 55 mph, it will take about 10 seconds to stop your vehicle • Wet roads can double stopping distance at any speed |
Wet roads can double stopping distance at any speed
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Which of these statements about emergency steering and tankers is true?
• A tanker is easier to counter steer than most vehicles • Always steer to the right • The clutch should be depressed before making quick steering movements • When making a quick steering movement do not apply the brakes |
When making a quick steering movement do not apply the brakes
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Which of these is the best way to take a curve?
• Slow to a safe speed before entering, then accelerate slightly through the curve • Slow to a safe speed before entering, then coast through the curve • Maintain speed until you enter, then downshift to slow down while you are in the curve • Brake all the way through the curve |
Slow to a safe speed before entering, then accelerate slightly through the curve
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A traffic emergency requires you to leave the road and escape to the shoulder. If possible slow down to ___ mph before using your brakes.
• 20 • 30 • 40 • 10 |
20
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Hauling liquids in tankers requires special care for two reasons. One reason is the ___ center of gravity.
• Flat • Low • Offset • High |
High
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Vehicle skids are often caused by:
• Driving with bald tires • Loose foreign material on the road surface • Driving too fast • Decelerating too fast |
Driving too fast
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An emergency forces you to stop your tanker quickly or crash. You should:
• Use light pressure on the brake pedal • Lock brakes with the pedal and hold it there • Use controlled or stab braking • Downshift and move right |
Use controlled or stab braking
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