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8.3 - Tanker Safe Driving Rules

In order to drive tank vehicles safely, you must remember to follow all the safe driving rules. A few of these rules are listed below.

8.3.1 – Drive Smoothly

Because of the high center of gravity and the surge of the liquid, you must start, slow down and stop very smoothly. Also, make smooth turns and lane changes.

8.3.2 – Controlling Surge

Keep a steady pressure on the brakes. Do not release too soon when coming to a stop. Brake far in advance of a stop and increase your following distance.

If you must make a quick stop to avoid a crash, use controlled or stab braking. If you do not remember how to use these methods, review Subsection 2.17.2.

Also, remember: If you steer quickly while braking, your vehicle may roll over.

8.3.3 – Curves

Slow down before curves, then accelerate slightly through the curve. The posted speed for a curve may be too fast for a tank vehicle.

8.3.4 – Stopping Distance

Keep in mind how much space you need to stop your vehicle.

Remember: Wet roads double the normal stopping distance. Empty tank vehicles may take longer to stop than full ones.

8.3.5 – Skids

Do not oversteer, over accelerate or over brake. If you do, your vehicle may skid. On tank trailers, if your drive wheels or trailer wheels begin to skid, your vehicle may jackknife. When any vehicle starts to skid, you must take action to restore traction to the wheels.

Multiple-Choice Questions:

Question #373 (1 of 3)

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What are some methods for controlling surge in a tanker?

  • Increase your following distance
  • Keep a steady pressure on the brakes. Do not release too soon when coming to a stop.
  • Brake far in advance of a stop
  • All these are correct

Controlling Surge

Keep a steady pressure on the brakes. Do not release too soon when coming to a stop. Brake far in advance of a stop and increase your following distance.

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Question #374 (2 of 3)

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What is the proper way to go through a curve with a tanker?

  • Slow down before curves, then accelerate slightly through the curve.
  • Slow down before curves, then maintain steady brake pressure through the curve
  • Slow down early in the curve and accelerate hard through the curve
  • Slow down while you're going through the beginning of the curve then maintain brake pressure throughout the curve
Slow down before curves, then accelerate slightly through the curve. The posted speed for a curve may be too fast for a tank vehicle.
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Question #372 (3 of 3)

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When driving a tanker, why must you start, slow down and stop very smoothly?

  • Because of the high pressure that builds up within the tank
  • Because of the high center of gravity and the surge of the liquid
  • Because of the braking forces exerted on the trailer axles
  • Because of the way the wind flows around the tank
Because of the high center of gravity and the surge of the liquid, you must start, slow down and stop very smoothly. Also, make smooth turns and lane changes.
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