California DMV Driving Glossary

California’s rule that you may never drive faster than is safe for current road, traffic, visibility, and weather conditions, even when the posted limit is higher.

The legal priority to proceed. A driver who must yield allows another road user to go first, while every road user still has a duty to prevent a collision.

The portion of a roadway intended for pedestrians. It may be marked with lines or exist unmarked where sidewalks would meet at an intersection.

A wide white line showing where a vehicle must stop at a signal or stop sign.

An area around a vehicle that mirrors do not show. A shoulder check is needed before moving into a nearby lane or traffic path.

A lane reserved during posted times for vehicles meeting occupancy or eligibility rules. Entry and exit must occur at permitted openings.

A shared center lane used by traffic from either direction to prepare for a left turn or permitted U-turn.

A marked lane intended for bicycle travel. A motor vehicle may enter only in limited situations, after checking for bicyclists.

A controlled slowing of freeway traffic, often created by a law-enforcement vehicle weaving across lanes with emergency lights.

Flashing red lights on a stopped school bus signal that children may be loading or unloading and traffic must stop as required.

A traffic signal requiring a complete stop, followed by yielding and proceeding only when safe.

A warning signal directing drivers to slow down and proceed carefully without a mandatory stop when the way is clear.

A red-and-white triangular sign requiring a driver to slow, assess traffic, and give the right-of-way when necessary.

A circular intersection where entering traffic yields to traffic already circulating and travels around a central island.

Loss of tire contact with the roadway when water builds between the tires and pavement, reducing steering and braking control.

A system designed to prevent wheel lock during hard braking so the driver can retain steering control.

Operating a vehicle while alcohol, cannabis, medication, or another drug impairs the ability to drive safely.

The percentage of alcohol in a person’s bloodstream, used as one measure in alcohol-related driving laws.

By driving in California, a licensed driver agrees to chemical testing under legally specified conditions after a lawful DUI arrest.

The California DMV form each involved driver or representative must file within 10 days when a collision meets injury, death, or property-damage reporting criteria.

The requirement to maintain evidence that a driver or vehicle can cover liability arising from a collision, commonly through automobile insurance.

A license for a driver under 18 that carries first-year restrictions on late-night driving and transporting young passengers, subject to limited exceptions.

A permit allowing supervised driving practice before a full license is issued, subject to age, supervision, and other requirements.

A court outcome finding a driver responsible for a traffic offense; it may appear on the driving record and affect DMV actions.

Points added to a California driving record for qualifying collisions and traffic convictions, used by DMV to identify unsafe driving patterns.

Not appearing in court as promised after signing a traffic citation.

Large blind-spot areas around a commercial truck where the truck driver may not see a nearby smaller vehicle.

A method for estimating a minimum following gap in normal conditions by counting three seconds after the vehicle ahead passes a fixed point.

A designated roadside area where a slower vehicle can pull aside to let following traffic pass.

A police, fire, ambulance, or other authorized vehicle using required warning equipment while responding to an emergency.

A place where a road crosses train tracks, identified by signs, markings, signals, or gates depending on the location.