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CDL · CDL · Professional Certifications

CDL Skid Control, Night and Winter Driving

Skid causes and recovery, night driving visibility, winter hazards, and chains.

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39 basic cards for CDL CDL. It opens with "What is hydroplaning?" and "At what speed does hydroplaning typically begin to occur?". More Professional Certifications decks are listed below.

39 cards · basic cards · AI-written, checked twice. Edit anything.

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What is hydroplaning?
Show answerWhen water builds up between tires and the road, causing loss of traction and steering control.
At what speed does hydroplaning typically begin to occur?
Show answer35 miles per hour or higher, depending on tire tread depth and water depth.
What is oversteering?
Show answerWhen the rear wheels slide out more than the front wheels, causing the vehicle to fishtail.
What is understeering?
Show answerWhen the front wheels lose traction and the vehicle continues straight despite steering input.
If your tractor skids, what is the correct first action?
Show answerEase off the accelerator and steer in the direction you want the front wheels to go.
If your trailer begins to skid, what should you do?
Show answerDo not brake; ease off the accelerator and steer to straighten the vehicle.
What is a jackknife?
Show answerThe tractor and trailer fold together at the coupling, typically from braking too hard on slippery surfaces.
How do you prevent jackknifing?
Show answerAvoid heavy braking on slippery surfaces, use engine braking, maintain proper speed and following distance.
Why is driving at night more hazardous than day driving?
Show answerReduced visibility, difficulty judging distance and speed, fatigue, and reduced ability to see road hazards.
How far ahead can headlights illuminate on a dark road?
Show answerApproximately 200 to 300 feet at normal speeds, depending on headlight condition.
What should you adjust your speed to match at night?
Show answerYour sight distance; you should be able to stop within the distance you can see.
At what distance should you dim high beams when approaching oncoming traffic?
Show answerAt least 500 feet ahead of oncoming vehicles.
Why should you not use high beams in fog or rain?
Show answerThe light reflects off the moisture and bounces back into your eyes, reducing visibility.
If oncoming headlights blind you at night, what should you do?
Show answerLook toward the right edge of the road, reduce speed, and avoid looking directly at the lights.
What is the best way to recognize and combat fatigue while night driving?
Show answerStop frequently, use scheduled breaks, and park in a safe location if drowsiness develops.

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