OK CDL Passenger study materials
OK CDL Passenger study resources

OK CDL Passenger cheat sheet

OK CDL Passenger · Keep the key ideas within reach.

Quick reference

Vehicle Inspection, Vehicle Control, and Shifting

  • Pre-trip inspection must cover engine compartment, walk-around exterior, and in-cab items; the CDL skills test requires you to name each part and state what damage or defect you are looking for.

  • Air brake check sequence: build pressure to governor cut-out, shut engine off, verify no more than 3 psi loss in one minute (single vehicle), then check warning buzzer by fanning pressure down below 60 psi.

  • Static leak test: with engine off and pressure applied, a loss rate above 3 psi per minute (single unit) or 4 psi per minute (combination) indicates a leak requiring repair.

  • Tug test on the coupling: after locking the fifth wheel, pull gently against the trailer with the trailer brakes set; movement means the jaws are not locked.

  • Manual transmission rule: do not shift while crossing railroad tracks or while turning; select the gear before the hazard and hold it through.

  • Upshift pattern follows road speed and engine rpm, not sound alone; on a passenger coach, stay in the highest gear that holds speed without lugging.

  • Automatic retarders and engine brakes must be controlled in rain, snow, or ice; a retarder can lock drive wheels on a slippery surface and cause a jackknife.

  • Progressive shifting raises rpm before each upshift to stay in the power band on grades; skip-shifting is acceptable only when the transmission and load allow it.

Quick reference

Loading and Unloading Passengers, and Safe Boarding/Alighting

  • Stop the bus so the right rear wheels are within 12 inches of the curb at a curb loading zone; a wider gap forces passengers to step into the roadway.

  • Set the parking brake and place the transmission in Neutral or Park before opening the door; the bus must not move while passengers are standing or boarding.

  • Count passengers by actual head count, not by seat estimate; the standing limit and seating capacity are separate numbers on the vehicle's capacity plate.

  • Standees are prohibited where the vehicle is not rated for them; a school bus carrying students may never exceed the rated seating capacity.

  • At a bus stop, do not release passengers until you confirm traffic in the adjacent lane has stopped or is clear, especially where no curb exists.

  • A passenger who needs assistance boarding should be given time and, where equipped, the lift or ramp used; never lift a passenger manually.

  • Before leaving any stop, verify all passengers are seated or holding a handhold, the door is closed, and the aisle is clear.

  • Loading and unloading at a railroad crossing is prohibited; if a stop is required, move the vehicle completely off the tracks first.

Quick reference

Railroad-Highway Grade Crossings and Emergency Procedures

  • A bus carrying passengers must stop at every railroad-highway grade crossing unless the crossing is exempt and posted; stop 15 to 50 feet before the nearest rail.

  • At the stop, open the door or window, turn off noisy devices, and listen; look both directions twice before proceeding.

  • Never start across until you can clear the entire crossing without stopping; the vehicle must fit on the far side, not just the near side.

  • If the vehicle stalls on the tracks, get everyone off and away from the tracks immediately, moving at least 100 feet away and toward the approaching train's direction.

  • After evacuation, call 911 or the railroad's emergency number posted at the crossing; give the crossing identifier (DOT number) shown on the sign.

  • Crossing signals and gates are warnings, not permission; a gate that rises does not guarantee the track is clear.

  • A bus with a stuck accelerator or brake failure near a crossing must be steered away from the tracks; never stop on the crossing to troubleshoot.

  • Emergency door operation must be known before departure: how the exit opens, where the release is, and how to evacuate passengers who cannot use the main door.

Quick reference

Vehicle Safety and Pre-Trip Inspection

  • Pre-trip items on a passenger coach include tires and tread depth, wheel lug nuts, brake adjustment, lights and reflectors, mirrors, wipers, horn, fire extinguisher, and emergency exits.

  • Tire rule: reject any tire with tread depth below 4/32 inch on a front axle or 2/32 inch on other axles, or with cuts, bulges, or exposed cord.

  • Check the fire extinguisher for a charged gauge, secure mounting, and current inspection tag; it must be rated for the hazards present.

  • Verify emergency exits open freely from inside, that exit signs are lit, and that the emergency door buzzer or alarm works.

  • Inspect the passenger compartment: seats secure, handholds intact, aisle clear, and no loose objects that could become projectiles in a stop.

  • Brake adjustment check: with the system at full pressure, mark the pushrod and apply the brake; a pushrod travel beyond the manufacturer's limit means out-of-adjustment brakes.

  • Check that required emergency equipment is aboard: warning triangles or reflectors, spare fuses, and a first aid kit where required.

  • A defect found on the pre-trip inspection must be corrected or the vehicle placed out of service; do not sign the inspection report as satisfactory if a safety defect remains.

Quick reference

Transporting Passengers Safely: Passenger Compartment, Aisles, Exits

  • Keep the aisle clear from front to rear at all times; a bag or foot in the aisle is a trip hazard and a blocked evacuation path.

  • Standing passengers must be behind the standee line, which is marked on the floor; no one stands forward of it or in the stairwell.

  • The driver's compartment is off-limits to passengers; do not allow anyone to ride in the step well or on the stairway.

  • Emergency exits must be unobstructed, labeled, and operable from inside; a blocked rear door defeats the primary evacuation route.

  • Passenger conduct that interferes with driving, such as grabbing the wheel or standing in the driver's view, requires stopping the vehicle in a safe place.

  • Do not allow passengers to ride on the outside of the vehicle, in the baggage compartment, or in a towed unit not designed for passengers.

  • Secure mobility devices and their occupants per the tiedown and occupant restraint system; an unsecured wheelchair becomes a hazard in a sudden stop.

  • Carry only the number of passengers the vehicle is rated for; overloading changes stopping distance and violates the vehicle's capacity rating.

Quick reference

Distracted Driving, Speed Management, and Space Management

  • Texting and handheld phone use are prohibited for commercial drivers; a hands-free device is permitted only where state law allows it and never for texting.

  • Following distance rule: at least one second per 10 feet of vehicle length at speeds under 40 mph, plus one additional second; a 40-foot bus at 40 mph needs at least 5 seconds.

  • At speeds above 40 mph, add one second to the following distance; the gap grows with speed because stopping distance grows with the square of speed.

  • Aim high in steering and look 12 to 15 seconds ahead; at highway speed that is roughly a quarter mile or more.

  • Speed must be reduced before entering a curve, a work zone, or a downgrade; braking in the curve risks a skid and loss of control.

  • Use the 4-second following rule as a minimum in good conditions and double it in rain, at night, or when the road surface is uncertain.

  • Distraction sources include passengers, dispatch devices, mirrors, and eating; any task that takes your eyes off the road for 2 seconds at 55 mph covers about 160 feet.

  • At intersections, cover the brake and scan left-right-left; a stale green light means prepare to stop, not accelerate.

Quick reference

Night Driving and Adverse Weather/Road Conditions

  • Headlights must be on from sunset to sunrise and whenever visibility is reduced; low beams are required in fog, rain, and snow because high beams reflect back.

  • Reduce speed at night so you can stop within the distance lit by your headlights; overdriving headlights is a leading cause of night crashes.

  • Hydroplaning begins at highway speeds on wet pavement; ease off the accelerator and do not brake hard, because braking can trigger a spin.

  • On ice or snow, brake gently and steer smoothly; a bus with air brakes needs longer stopping distance and may not have ABS on all axles.

  • In fog, use low beams and slow down; do not stop on the roadway, and if you must stop, move fully off the road and turn on hazard flashers.

  • Crosswind and passing trucks can push a high-profile bus; grip the wheel firmly and reduce speed before the gust, not after.

  • A flooded roadway must be treated as impassable until depth is verified; moving water can float or sweep a bus off the road.

  • When visibility drops below a safe level, pull off at an exit or safe area and stop; continuing at reduced speed is not a substitute for stopping.

Quick reference

Hazard Perception and Hazard Recognition

  • Scan 12 to 15 seconds ahead and check mirrors every 5 to 8 seconds; a hazard is any condition that could force a change in speed or path.

  • Identify the hazard, decide the response, and act early; a hazard recognized at 12 seconds allows a smooth response instead of a panic stop.

  • Watch for pedestrians near a stopped bus or parked cars; a person hidden by a vehicle can step out with no warning.

  • At a bus stop, expect passengers to cross in front of the bus; scan for them before pulling away and check both mirrors.

  • A stale green light, a vehicle drifting in its lane, or brake lights ahead are cues to cover the brake and prepare to stop.

  • In work zones, expect narrowed lanes, workers, and equipment; reduce speed before the taper and follow the flagger's signals.

  • Railroad crossings, bridges, and tunnels are fixed hazards; identify the clearance and the exit path before entering.

  • Recognize a distracted or impaired driver by lane drift, inconsistent speed, and delayed reactions; increase following distance and pass only when clear.

Quick reference

Emergency Response, Evacuation, and Post-Crash Procedures

  • Evacuation order: stop the vehicle in a safe place, set the parking brake, shut off the engine, and only then open the exits.

  • Evacuate passengers away from traffic and upwind of fire; move them at least 100 feet from the vehicle and further from a burning bus.

  • Use the exit farthest from the hazard; if the main door is blocked, use the rear door, roof hatch, or windows as designed.

  • After a crash, protect the scene: turn on hazard flashers, place warning triangles behind the vehicle, and call 911 with location and injury count.

  • Do not move injured passengers unless there is immediate danger such as fire or traffic; moving them can worsen spinal injuries.

  • Account for every passenger after evacuation by head count; report the count to emergency responders and note anyone unaccounted for.

  • Do not leave the scene of a crash involving injury or death until you have given required information; remain until released by authorities.

  • Report the crash to your employer and complete the required written report; post-crash testing for alcohol and drugs may be required by federal rules.