This commercial driver study guide covers relevant Federal Motor Carrier Safety Administration (FMCSA) Entry-Level Driver Training (ELDT) concepts and California commercial driver knowledge topics. Review the regulations, procedures, and safety checklists below as part of your CDL and commercial learner permit (CLP) preparation.
Protect the scene
Stop safely, activate warning flashers, and place warning devices as required. Position yourself so approaching traffic does not create a second crash.
Notify and assist
Contact emergency services, provide accurate location and hazard information, and assist injured people within your training. Do not move them unless immediate danger requires it.
Document and report
Follow law, employer procedures, drug/alcohol testing rules, and reporting duties. Preserve facts rather than assigning blame at the scene.
Immediate priorities
Stop as close to the scene as safety permits, secure the vehicle, activate warning systems, assess fire, traffic, cargo, and medical hazards, and call emergency services. Give a precise location, direction of travel, vehicle and cargo information, number of injured people if known, and hazards such as fuel, downed power lines, or a material release.
Avoid a secondary collision
Wear visible clothing when available, keep people away from traffic, and place warning devices according to the road layout and current rules. Do not stand between vehicles, in a blind curve, or beside unstable cargo. Move a vehicle only when required for immediate safety or directed by authorities, considering injuries, fire, traffic exposure, and legal duties.
Care within your training
Check for immediate danger before approaching. Do not move an injured person unless fire, traffic, or another imminent threat makes staying more dangerous. Provide first aid only within your training, use protective barriers when available, keep injured people calm and warm, and relay changes to dispatchers. Never create an additional victim by entering an unsafe area.
Preserve accurate information
Exchange and record required identifying, insurance, vehicle, witness, location, and agency information. Photograph conditions when lawful and safe, but do not interfere with care or traffic control. Make factual notes and preserve logs, electronic data, and company records. Follow post-crash testing and reporting procedures; do not speculate about fault at the scene.
Scenario: minor crash near a curve
After a low-speed collision, both vehicles stop just beyond a blind curve. The commercial driver activates flashers, checks for injuries and leaks, and calls emergency services with the exact location. Warning devices are positioned to alert traffic before it reaches the hidden scene, following the current handbook pattern. Only after immediate safety is addressed does the driver collect facts and contact the employer.
Commercial Driver License Exam Readiness: Achieving a passing grade of 80% or higher on state DMV commercial driver knowledge exams requires mastery of federal vehicle inspection procedures, gross vehicle weight ratings (GVWR / GCWR), braking mechanics, and road safety regulations.