Question The easiest way to recognize that your trailer has begun to skid is to: Answers Ask another driver. Use your mirrors to determine if the trailer has left the lane. Release the brake pedal and then push it down again. Watch the jackknife warning light on the control panel. Explanation The easiest way to spot a trailer skid is to use your mirrors. Any time you brake hard, check your mirrors to ensure that your trailer is still in its proper position. Take a FREE Practice Test Now This questions appears in the following tests: Pennsylvania HazMat , Kansas Combination , Nebraska Combination , New Jersey Combination , New York Combination , West Virginia Combination ,