California CDL General Knowledge: Skid Control Test 2026

A skid in an 80,000-pound rig unfolds differently than in a passenger car, so the California CDL skid control and recovery test focuses on recognizing and correcting a loss of traction before it becomes a jackknife. This section checks whether a permit candidate knows the early signs of a skid and the steering correction that stops it from getting worse. It is one of the more technical categories on the California CDL practice test.

Questions cover the difference between a drive-wheel skid, a front-wheel skid, and a trailer skid, the steering correction each one calls for, and why overcorrecting often turns a minor skid into a full jackknife. The California Commercial Driver Handbook walks through recovery technique step by step because instinctive reactions in a car, like slamming the brakes, often make a commercial vehicle skid worse rather than better.

Skid recognition and recovery sit inside the same 50-question California CDL general knowledge exam, where 80 percent, or 40 correct answers, is the passing bar. Work through this drill until the correction technique for each skid type is automatic, then continue through the rest of your CDL practice questions.

Keep going:

• California CDL Practice Test
• California CDL Practice Test 2
• California CDL Practice Test 3
• California CDL Practice Test 4
• California Air Brakes Practice Test
• California CDL Combination Practice Test
• California CDL Pre-Trip Inspection Practice Test
• California Hazmat Practice Test
• California Class A CDL Practice Test
• California CDL Practice Test

Every question traces back to the California CDL Manual - skim the right-of-way and signs chapters before your retake.