NM CDL Passenger key terms

A systematic walk-around and in-cab check of tires, brakes, lights, mirrors, emergency exits, and fluids performed before driving, so defects are found while the vehicle is stationary rather than at highway speed.

A test confirming that pushrod travel on air-brake chambers stays within the allowed limit, meaning brakes will apply fully; excessive travel signals slack adjuster or chamber problems requiring correction before departure.

A check that the compressor raises reservoir pressure to the governor cut-out level within a reasonable time at operating RPM, showing the air supply can keep pace with brake and accessory demand.

A buzzer and light that must activate before reservoir pressure drops below the required threshold, alerting the driver that braking capability is fading and the vehicle must be stopped safely.

Verification that roof hatches, side windows, and rear doors open freely, are labeled, and have intact seals and warning devices, so passengers can escape if the main door is blocked.

A test that the parking or emergency brake holds the loaded vehicle stationary on a grade, confirming the spring brakes will engage if air pressure is lost.

A marking near the driver showing where standing passengers may not cross, keeping the aisle and forward area clear so the driver's view and control of the door are not obstructed.

Stowing carry-on and checked items so nothing can slide into the aisle, block an exit, or strike passengers during a sudden stop; overhead racks and compartments must be closed and latched.

The requirement that the walkway stay free of luggage, folding seats, and debris so passengers can move to exits quickly during an emergency evacuation.

A designated area where boarding and alighting occur, chosen so riders are not exposed to moving traffic and the vehicle can stop without blocking a travel lane or crosswalk.

Telling passengers the upcoming stop and any transfer or safety information before arrival, giving them time to gather belongings and move toward the door safely.

A hinged sign extended from the side of a school bus that signals traffic to halt while children board or leave; drivers must retract it before moving and account for it in mirror checks.

The area immediately around a school bus where children are hard to see, roughly ten feet in every direction; the driver must account for it before moving and while students cross.

Setting flat and convex mirrors so the driver sees the sides, rear, and door area of the bus, including the danger zone, with minimal overlap and no obstruction of the forward view.

Any area around the vehicle the driver cannot see directly or through mirrors, including directly behind the bumper and low beside the doors, where pedestrians and cyclists may vanish.

The gap kept behind the vehicle ahead, measured in seconds at highway speed and extended when loaded, at night, or in rain, so a stop can be made without striking passengers or the lead vehicle.

The margin of clear roadway kept on all sides of the bus, giving room to brake, swerve, or absorb another driver's error without a collision.

Slowing before a curve rather than braking inside it, because a high center of gravity and standing passengers make buses prone to rollover and passenger falls during hard cornering.

The tendency of a tall, narrow vehicle to tip when cornering fast, swerving abruptly, or running off the pavement edge, a hazard magnified by roof loads and standing riders.

The organized removal of passengers from a disabled or burning bus using the main door, side windows, roof hatches, or rear exit, with a leader assigned and a gathering point chosen.

Applying the PASS method, pull, aim, squeeze, sweep, at the base of a small fire while keeping an escape route open; a spreading fire means evacuate rather than fight.

Actions taken when brakes fade or fail: downshift, use engine braking, pump the pedal if it is a hydraulic system, apply the parking brake gradually, and steer toward a safe runoff.

Holding the steering wheel firmly, keeping the accelerator steady or easing off, and avoiding hard braking so the vehicle does not swerve into traffic while a failed tire drags.

An escape lane of gravel or sand built on a steep downgrade that stops a vehicle whose brakes have failed, used only when braking can no longer control speed.

Steps after a collision: stop, set the parking brake, turn off the engine, turn on hazard lights, place warning devices, and check for fire or leaking fuel before assisting anyone.

Notifying law enforcement and the carrier promptly, then recording time, location, vehicles, injuries, witnesses, and damage on the required report without admitting fault.

Checking injured passengers in order of severity, controlling bleeding, keeping the airway open, and not moving a suspected spinal injury unless fire or traffic forces evacuation.

Setting reflective triangles or flares at the distances required by regulation behind a stopped vehicle, farther on curves or hills, so approaching traffic has time to change lanes.

The slow adjustment of the eyes to darkness, which is why a driver should reduce speed after dusk and avoid looking directly at oncoming headlights to prevent temporary blinding.

Running low beams in fog, rain, snow, and at night, dimming for oncoming traffic, and never relying on high beams in precipitation where reflected light worsens visibility.

The seconds needed for vision to return after passing bright lights; drivers should slow down and look toward the right edge line until the eyes readjust.

Loss of tire contact with the pavement on a film of water, causing steering and braking to fade; the response is to ease off the accelerator and avoid sudden inputs.

Steering in the direction the rear of the vehicle is sliding while releasing hard braking, then straightening as traction returns; abrupt correction causes a second, sharper skid.

The requirement that certain passenger vehicles stop before every rail crossing, open the door or window to listen, and proceed only when no train is approaching.

Confirming that the full length of the vehicle, including the rear overhang, can clear the tracks before starting across, so the bus never stops straddling the rails.

If the bus stops on the tracks, get everyone out and away from the rails immediately, then move the bus only if it starts; call the railroad emergency number posted at the crossing.

The added credential, with knowledge and skills testing, required to drive a vehicle designed to carry sixteen or more people including the driver; it must match the license class.

The written portion of endorsement testing covering vehicle inspection, loading, safe driving, emergencies, and railroad crossings, which must be passed before the skills test is scheduled.

The practical portion where the examiner scores the pre-trip inspection, basic control, and on-road driving, including passenger stops, railroad crossings, and use of mirrors.