ELDT Skid Control and Recovery 3

Question 1

Which action best helps prevent skids before they start?

Accepted Answer

Adjusting speed and following distance to match conditions

Answer

Preventing skids starts with adjusting speed and space to the road and weather conditions.

Question 2

A jackknife occurs when:

Accepted Answer

The trailer swings out and folds toward the tractor

Answer

A jackknife happens when the trailer's rear wheels skid and the trailer swings toward the tractor, forming an angle.

Question 3

Trailer skids (trailer jackknife) are most often caused by:

Accepted Answer

Locking the trailer wheels through hard braking

Answer

Trailer jackknifes usually result from the trailer wheels locking up during hard braking.

Question 4

The best way to prevent a trailer skid from locked wheels is to:

Accepted Answer

Recognize the skid early and release the brakes to let the trailer wheels roll

Answer

Release the brakes so the trailer wheels can roll and realign behind the tractor.

Question 5

You can spot a trailer jackknife starting by:

Accepted Answer

Checking your mirrors and seeing the trailer swinging out

Answer

Regular mirror checks let you see the trailer swinging out so you can react early.

Entry Level Driver Training (ELDT) Practice Test