NC DMV Permit Test study materials
NC DMV Permit Test study resources

NC DMV Permit Test key terms

NC DMV Permit Test · Get comfortable with the vocabulary.

Stop Sign

A red, eight-sided sign that requires a complete stop at the stop line, crosswalk, or edge of the intersection before you go on when the way is clear.

Related: Four-Way Stop, Flashing Red Light
Yield Sign

A red-and-white triangular sign meaning you must slow down and let traffic on the intersecting road go first, stopping only if needed to avoid a crash.

Related: Right-of-Way, Roundabout
Flashing Red Light

A signal that works like a stop sign: come to a full stop, then go only when it is safe. At intersections, treat it like a four-way stop.

Related: Stop Sign, Four-Way Stop
Flashing Yellow Light

A signal telling you to slow down and use caution. It does not require a stop unless traffic, a pedestrian, or another hazard makes stopping necessary.

Related: Yield Sign, Right-of-Way
Solid Yellow Center Line

A line marking the center of a two-way road. It separates traffic moving in opposite directions, and passing is not allowed when the line is on your side.

Related: No-Passing Zone, Double Solid Yellow Line
Broken White Line

A dashed white line that separates lanes of traffic moving in the same direction. You may cross it to change lanes when it is safe to do so.

Related: Blind Spot
Double Solid Yellow Line

Two yellow lines side by side meaning neither direction of traffic may pass. You may cross them only to turn left into a driveway or side road.

Related: Solid Yellow Center Line, No-Passing Zone
No-Passing Zone

A stretch of road marked by signs or pavement lines where overtaking another vehicle is prohibited, usually because of limited sight distance or heavy traffic.

Related: Solid Yellow Center Line, Passing on the Left
Railroad Crossing

A place where a road crosses train tracks, marked by signs and often gates or flashing lights. Stop when lights flash or a train approaches, and never drive around lowered gates.

Related: Flashing Red Light
Right-of-Way

The legal priority to go first at an intersection or when vehicles meet. It is given by law or yielded by others; it is never taken by force or simply assumed.

Related: Four-Way Stop, Yield Sign, Pedestrian Crosswalk
Four-Way Stop

An intersection where all approaching traffic faces a stop sign. The first vehicle to stop goes first; if two stop at once, the one on the right goes first.

Related: Right-of-Way, Stop Sign
Left Turn on Red

In North Carolina you may turn left onto a one-way street from a one-way street after stopping for a red light, if no sign forbids it and the way is clear.

Related: Right-of-Way
Roundabout

A circular intersection with no traffic signal. Traffic already in the circle has the right of way; enter to the right, yield, then exit when you reach your road.

Related: Yield Sign, Right-of-Way
Passing on the Left

Overtaking a slower vehicle by moving into the left lane after checking mirrors and blind spots, signaling, and returning right only when you can see the passed car.

Related: No-Passing Zone, Blind Spot
Basic Speed Law

The rule that you must never drive faster than is reasonable and prudent for current conditions, even when you are under the posted speed limit.

Related: Three-Second Rule
Three-Second Rule

A way to judge following distance: watch the car ahead pass a fixed object, then count three seconds before you reach it. Increase the gap in rain, darkness, or heavy traffic.

Related: Basic Speed Law, Hydroplaning
Distracted Driving

Any activity that takes your eyes off the road, hands off the wheel, or mind off driving, such as texting, eating, or tuning a radio. North Carolina bans texting while driving.

Related: Drowsy Driving
Drowsy Driving

Driving while sleepy or fatigued, which slows reaction time and can cause you to nod off. The safe response is to stop and rest, not to roll down a window.

Related: Distracted Driving
Blind Spot

An area around your vehicle that you cannot see in the mirrors. Check over your shoulder before changing lanes, because a car, bicycle, or motorcycle may be hidden there.

Related: Passing on the Left, Broken White Line
Blood Alcohol Concentration (BAC)

The percentage of alcohol in your blood, used to measure impairment. In North Carolina it is illegal to drive with a BAC of 0.08 or higher at age 21 and over.

Related: Driving While Impaired (DWI), Implied Consent, Zero Tolerance
Driving While Impaired (DWI)

A North Carolina charge for operating a vehicle while affected by alcohol, drugs, or a combination that impairs your ability to drive safely. It can apply even below a 0.08 BAC.

Related: Blood Alcohol Concentration (BAC), Implied Consent
Implied Consent

By driving on North Carolina roads you agree to submit to a chemical test of breath or blood when lawfully requested by an officer investigating impaired driving. Refusal can cost your license.

Related: Driving While Impaired (DWI), Blood Alcohol Concentration (BAC)
Zero Tolerance

The rule that drivers under 21 must not drive with any alcohol in their system; a measurable BAC results in license suspension and other penalties.

Related: Blood Alcohol Concentration (BAC), Driving While Impaired (DWI)
Open Container

An open bottle or can of alcohol inside the passenger area of a vehicle. North Carolina law prohibits open containers of alcohol in the passenger area while the vehicle is on a highway.

Related: Driving While Impaired (DWI)
Seat Belt Law

North Carolina requires the driver and all front-seat passengers to wear seat belts, and every passenger under 16 must be buckled in any seating position.

Related: Child Passenger Safety Seat
Child Passenger Safety Seat

A federally approved restraint that must be used for children young or small enough to need it. North Carolina requires a rear-facing seat for children under 2 unless they exceed the seat's limits.

Related: Seat Belt Law
Headlights

Lights on the front of a vehicle that let you see and be seen. North Carolina requires them from sunset to sunrise and whenever visibility is poor, including in rain or fog.

Related: Fog
Turn Signal

Lights that show other drivers your plan to turn or change lanes. Signal at least 100 feet before a turn in town and 200 feet on the open highway.

Related: Hand Signal, Blind Spot
Hand Signal

Arm signals used when turn signals or brake lights fail: left arm straight out for a left turn, upward for a right turn, and downward for slowing or stopping.

Related: Turn Signal
Move Over Law

A North Carolina law requiring drivers to change lanes away from a stopped emergency, tow, or utility vehicle with flashing lights, or to slow down if a lane change is not possible.

Related: Work Zone
School Bus Stop Arm

The hinged stop sign that swings out from a school bus picking up or dropping off children. Traffic in both directions must stop unless separated by a median or physical barrier.

Related: Pedestrian Crosswalk
Pedestrian Crosswalk

A marked or unmarked path where pedestrians cross a road. Drivers must yield to pedestrians in a crosswalk and must not pass a vehicle stopped there for a pedestrian.

Related: Right-of-Way, School Bus Stop Arm
Hydroplaning

When tires ride on a layer of water instead of the road, causing loss of steering and braking. Ease off the gas, keep the wheel straight, and avoid hard braking until grip returns.

Related: Three-Second Rule, Basic Speed Law
Black Ice

A thin, nearly invisible layer of ice on the road, often on bridges, overpasses, and shaded areas. Slow down and make no sudden moves when temperatures are near freezing.

Related: Hydroplaning
Work Zone

An area where road construction or maintenance is underway. Speed limits are reduced, fines are doubled, and lanes may shift, so slow down and watch signs and flaggers closely.

Related: Move Over Law, Basic Speed Law
Fog

A cloud near the ground that cuts visibility. Use low-beam headlights, slow down, and increase following distance; never use high beams because the light reflects back and worsens glare.

Related: Headlights, Three-Second Rule