South Carolina CDL General Knowledge: Driver Fitness Test 2026

A rested, healthy driver is a safe driver, and the South Carolina CDL driver fitness and hours of service test measures whether you understand the rules that keep you that way. This 2026 practice set covers daily and weekly driving limits, required rest breaks, logging your hours, and the medical fitness standards a commercial driver must meet. Hours of service is a key part of the South Carolina CDL general knowledge exam.

Expect questions on the 11-hour and 14-hour limits, the 30-minute break rule, recognizing fatigue, and why illness or certain conditions can keep you off the road. These federal FMCSA rules apply the same way to every South Carolina CDL holder.

When an hours-of-service detail is fuzzy, the South Carolina Commercial Driver License Manual gives the authoritative answer. Nail the limits and logging rules here, then keep working through the general knowledge topics.

Keep going:

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

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