OK CDL Passenger key terms

A systematic check of a commercial vehicle's critical parts and systems, performed before driving, to confirm they are present, secure, and working so defects are found while the vehicle is still parked.

The staged inspection sequence a driver performs around the vehicle, checking lights, tires, couplings, and emergency equipment in a fixed order so nothing is skipped and each item is verified in person.

Tests of service brakes, parking brake, and air pressure (if equipped) done before driving to confirm the vehicle can stop reliably and does not leak pressure or roll when parked.

A parked check in which the driver applies full pressure, watches the gauge for a set period, and confirms air loss stays within the vehicle manufacturer's allowed limit before the vehicle is driven.

A buzzer and light that activate when air pressure drops below the vehicle's warning threshold, alerting the driver that brakes may soon fail and the vehicle must be stopped safely.

Inspection of each tire for minimum legal tread depth, cuts, bulges, exposed cords, and proper inflation, since tire failure at highway speed is a leading cause of loss of control in passenger vehicles.

A defect serious enough that regulations or company policy prohibit operating the vehicle until it is repaired, such as a broken brake, missing emergency exit handle, or badly damaged tire.

Verification that every marked exit, roof hatch, and window escape opens freely, is unobstructed, and has a working alarm or handle, so passengers can leave quickly in a crisis.

A written record of defects found during inspection and of repairs made, kept so the next driver and the carrier know the vehicle's condition before it is dispatched again.

Setting flat and convex mirrors so the driver sees the sides and rear of the bus, then knowing the areas those mirrors still cannot show, including directly behind and beside the vehicle.

The margin of empty road kept around the vehicle, ahead, behind, and to the sides, giving the driver time to react when traffic, pedestrians, or road conditions change suddenly.

The gap kept between the bus and the vehicle ahead, measured in seconds and increased for heavy loads, wet roads, darkness, or poor visibility so stopping remains possible.

Choosing a travel speed below the posted limit when weather, traffic, road surface, or passenger load makes the posted limit unsafe for stopping and steering within the available space.

Any activity that pulls the driver's eyes, hands, or attention away from driving, including phones, dispatch devices, eating, and passenger conversations that demand sustained focus.

Distraction that requires the driver to look away and take a hand off the wheel, such as texting or adjusting a device, which sharply raises crash risk at highway speed.

Company or legal rules limiting phone and device use while driving, often permitting only brief hands-free calls and banning texting, so the driver stays focused on the road.

A staged maneuver: check mirrors, signal, check the blind spot, confirm space, and move smoothly, done so other drivers and passengers are not surprised by the bus's movement.

Applying brakes and throttle gradually so standing and seated passengers are not thrown off balance, which also reduces loss of traction on slick surfaces.

The response to sliding: stop hard braking, ease off the throttle, and steer gently in the direction the vehicle should go until the tires regain grip, avoiding sudden inputs that worsen the slide.

Loss of tire contact with the pavement when water builds up under the tires, causing steering and braking to fade; the driver should slow gradually without hard braking or sharp turns.

The reduced ability to see hazards after dark, managed by using low beams around traffic, slowing down, and looking beyond headlight range for pedestrians and unlit objects.

A driver's pre-decided response to rain, snow, ice, fog, or high wind, including reduced speed, extra following distance, and a decision point for stopping rather than continuing.

Fitting tire chains or using winter equipment where required, then driving at reduced speed and avoiding abrupt steering or braking so the vehicle stays stable on snow and ice.

The skill of scanning far ahead and to the sides to spot potential problems, such as a pedestrian near the curb or a stopped truck, before they become emergencies.

A disciplined eye movement cycle, looking well ahead, then to mirrors and instruments, then near the vehicle, repeated constantly so no zone goes unwatched for long.

A planned path out of trouble, such as an open lane or shoulder, identified in advance so the driver has somewhere to steer if traffic ahead stops suddenly.

The designated area where the bus stops to take on or let off passengers, chosen so people can reach it without walking through moving traffic and the bus stays clear of travel lanes.

The ordered steps for stopping, securing the bus, opening doors, watching passengers get on or off, counting them, and closing doors before moving again.

A safety system that prevents the bus from moving, or warns the driver, while a passenger door is open, protecting people who are still stepping on or off.

A tally of riders taken at boarding and at key points on the route, used to confirm no one is left behind and to stay within the vehicle's rated capacity.

The maximum number of seated and standing passengers the vehicle is designed and legal to carry, beyond which handling, braking, and exit access are compromised.

Rules on whether and where riders may stand, such as behind the white line and clear of doors, and when standing must be prohibited because of road or traffic conditions.

Keeping the walkway between seats free of bags, legs, and equipment so passengers can move to exits quickly and the driver can see the cabin.

A marked door, window, or roof hatch designed for rapid escape, which must stay unobstructed, clearly labeled, and operable by passengers without tools.

The organized removal of passengers from a vehicle in danger, using a clear command, assigned helpers, and the nearest safe exits, followed by moving people well away from traffic.

The steps after a collision: secure the scene, check for injuries, call for help, account for passengers, and exchange required information without moving the injured unless there is immediate danger.

Applying the PASS method, pull, aim, squeeze, sweep, at the base of a small fire from a safe distance, with evacuation started first if smoke or flames threaten the cabin.

A place where a road crosses train tracks at the same level, requiring the driver to slow, look and listen, and confirm no train is coming before proceeding across.

The approach to a crossing: turn off noisy fans or radios, open a window to listen, stop when required, look both ways, and cross without stopping until the whole vehicle is clear.

The emergency in which a vehicle cannot clear the crossing: get everyone out and away immediately, then call the railroad's emergency number posted at the crossing rather than trying to restart the vehicle.

The reaction to a sudden tire failure: hold the wheel firmly, keep the vehicle straight, ease off the throttle, and slow gradually before pulling off the road, avoiding hard braking.

A firm, controlled stop applied when a hazard appears suddenly, done while keeping the vehicle straight and warning passengers, then followed by securing the bus and checking on riders.

Telling passengers the next stop and any safety instructions before arrival, giving them time to prepare, rise safely, and move toward the door without rushing.

Planning device use, route questions, and paperwork for stops or safe moments so the driver's attention stays on traffic during movement.