North Carolina Traffic Signals & Pavement Markings Guide

October 10, 2026

North Carolina urban intersection with traffic signals and lane markings

Traffic signals and pavement markings help North Carolina drivers choose where and when to stop, turn, yield and maintain their lanes. Study the rules and practice applying them safely.

Steady Red, Yellow and Green Signals

A steady red signal generally requires stopping; green permits movement only when other laws and roadway conditions allow it; and yellow warns of a signal change. Rather than memorizing three colors in isolation, consider drivers already in an intersection and pedestrians who may have the right of way.

Signals With Arrows or Flashing Lights

A flashing signal or a directional arrow can have instructions different from a steady circular signal. Review the exact meanings and exceptions in the North Carolina Driver Handbook before driving or taking the written knowledge test.

White and Yellow Lane Markings

Pavement lines help separate same-direction and opposing traffic and show lane boundaries or restrictions. Read the combination of color, continuity and roadway context before deciding whether a maneuver is appropriate. Do not rely on a single diagram without the accompanying official rule.

Combine Multiple Controls in Practice

Approach a practice intersection mentally: identify the traffic light, lane markings, signs, crosswalks and surrounding traffic. Ask how each affects your choice. This produces better understanding than learning the meaning of each control without its real-world use.

Flashing Red and Yellow Traffic Signals

Chapter 5 of the official NCDMV Driver Handbook explains that a flashing red signal has the same meaning as STOP: come to a complete stop and proceed only when you can do so without interfering with approaching traffic. A flashing yellow signal means to slow down and proceed with caution. This distinction is important when a question describes a flashing signal rather than a steady light.

Flashing Yellow Turn Arrows

North Carolina's handbook explains that a flashing yellow arrow allows a turn only after yielding to oncoming traffic and pedestrians. A steady green arrow indicates a protected movement, but you must still be attentive to anyone lawfully in the roadway. Learn the instructions associated with each arrow, rather than treating all turning signals as identical.

Understanding Yellow Center Lines and White Lane Lines

Chapter 5 says yellow lines separate opposing directions of travel and white lines usually separate lanes moving in the same direction. Double solid yellow center lines mean you must not cross them to pass in either direction. When a broken yellow line is on your side of a two-way road, passing with care may be permitted if otherwise safe and lawful. Two-way left-turn lanes are reserved for turning, not passing or merging.

What to Do When a Signal Is Not Working

The NCDMV handbook directs drivers to approach an intersection with a malfunctioning traffic signal as though every approach has a stop sign, unless an officer or another authorized person is directing traffic or a different traffic-control device is operating. Always obey a traffic officer's authorized instructions. For the separate sign-recognition assessment, also visit our regulatory and warning signs guide.

Scenario practice: a turning lane at a busy intersection

You approach a turning lane bordered by painted lines while the signal ahead changes. First, identify whether the lane marking allows your planned movement. Then identify whether you face a circular signal, a protected arrow or a flashing turn arrow. Check for pedestrians and oncoming traffic before turning. A traffic signal does not cancel the need to yield when the law requires it.

Common misunderstandings to review

Flashing yellow means caution, not a mandatory full stop in every case.
Flashing red requires a full stop before proceeding when lawful and safe.
Yellow lines normally divide opposing traffic, while white lines normally separate same-direction lanes.
A broken line does not override poor visibility or make a dangerous pass lawful.
Traffic officers or other authorized directions can govern situations involving malfunctioning signals.

Use the North Carolina Driver Handbook's illustrations to verify particular line patterns and arrow signals. Practice explaining both the visual control and the correct next action.