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Read-only Memory

A solid-state storage chip that is programmed at the time of its manufacture, cannot be programmed by the computer user, and retains its program when the computer's power is turned off.

Real-time

A real-time computer can respond with output information instantly.

Real-time Sampling

A sampling mode in which the oscilloscope collects as many samples as possible from one triggered acquisition.

Rear Antilock Brake System

A two-wheel Kelsey-Hayes ABS used on the rear wheels of Ford light-duty pickup trucks.

Rear Antilock Brake System (RABS)

A two-wheel Kelsey-Hayes ABS used on the rear wheels of Ford light-duty pickup trucks.

Rear Clip

The rear end of a vehicle's bodywork extending from the door pillar back.

Rear Control Arm

Horizontal arms that connect the rear axle housing to the frame when coil springs are used in the rear suspension system to maintain axle alignment and handle the driving and torque loads.

Rear Driving

A term used for rear-wheel drive.

Rear End

The differential and final drive assembly on a rear-wheel drive vehicle.

Rear Engine

An engine arrangement where the engine is placed behind the rear wheels, driving them through the transaxle assembly.

Rear Leaf Spring

A term used for leaf spring.

Rear Roll Center

The center as determined by the rear suspension geometry around which the rearward part of a vehicle has a tendency to roll.

Rear Shock

A type of shock absorber that is compatible with a particular type of driving and its load requirement.

Rear Steer

A steering gear that is positioned behind the front-wheel centerline.

Rear Strut

A shock-absorber-type component that supports the rear of a vehicle with IRS (Independent Rear Suspension).

Rear Suspension

An integral part of the total suspension system designed to keep the rear axle and wheels in their proper position under the car body, typically of two types; solid axle type and independent rear-suspension type.

Rear Vacuum Brake

Used to control choke operation during cold engine conditions.

Rear Wheel Anti-lock Brakes(RWAL)

A two-wheel ABS used on the rear wheels of GM and Daimler Chrysler light-duty pickup trucks and some SUVs One of the best known Kelsy-Hays systems.

Rear-axle Assembly

A group of parts that operate to transfer driving torque from the drive shaft to the rear wheels, and includes mounting pads for the rear springs and shocks.

Rear-axle Housing

The basic framework of the rear-axle assembly inside which the individual parts, including the differential and axles are mounted and/or operate.