Red Light Laws Explained: When You Can Turn, Stop, or Go

We have all been there, sitting at a red light that seems to last forever, wondering if it is okay to turn or if it is safer to wait. Red light laws exist to clarify those moments. They are designed to keep everyone on the road safe, but the exact rules can vary from state to state. After witnessing a few close calls at intersections, I realized that understanding the meanings of different red lights helps avoid confusion and accidents.

Ahead, you will learn when it is legal to turn right on red, what a blinking red light really means, who can go through a red light, and what the rules say about having red lights on your car.

Can You Always Turn Right on Red?

Red traffic light with "No Turn On Red" sign and intersection camera. — GLJones/Getty Images

No, you cannot always turn right on a red light. In most places, you can make a right turn after coming to a complete stop, provided there is no sign prohibiting it. You must also yield to pedestrians, cyclists, and other vehicles before making a turn.

According to the California Driver’s Handbook, a solid red light means stop. You can turn right only if there is no “No Turn on Red” sign, you stop completely at the limit line, and the way is clear. A red arrow, however, means you must stay stopped until a green light or arrow appears.

Which States Can You Turn Right on Red In?

No U.S. states unilaterally prohibit you from turning right on red after stopping. However, there are some exceptions, most commonly intersections with a “No Turn on Red” sign. Those are common in busy areas or spots with limited visibility.

In many west coast states, and in a few others, you can also turn left on red when going from one one-way street to another. California, Oregon, Washington, Nevada, and Texas all allow it, as long as no sign says otherwise. Since the exact rules vary, it’s best to check your state’s driver handbook before assuming the same laws apply everywhere.

What Does a Blinking Red Traffic Light Mean?

A blinking or flashing red light means stop, then go when it is safe. It acts like a stop sign. You must come to a full stop, look both ways, and proceed only when the intersection is clear.

When Can You Run a Red Light?

You can’t run a red light, period. It’s illegal and risky, even if the road looks clear. The only exception is for emergency vehicles (police, fire, or ambulances) when they’re using lights and sirens during an active call.

“Also remember that a right turn on red is an option, not a requirement,” says Robert Dillman, founder at NEVO Driving Academy. “You can always choose to wait. Come to a complete stop, breathe for a moment, and check the crosswalk, the oncoming lane, and any movement that might change your plan. Only turn when the space is clear and you feel fully comfortable making that move. Safe driving is never about rushing.”

Funeral processions are a gray area. Some states let the first car continue through once the line begins moving, but most require everyone to follow normal signals unless a police escort is leading the group. If you’re part of one, it’s safest to stop and wait for the green before continuing.

Can You Have Red Lights on a Car?

police siren light on the street in San Francisco. — JasonDoiy/Getty Images

No. And for an obvious reason.

“Red and blue lights have long symbolized urgency, which is exactly why they are only permitted on emergency vehicles or for law enforcement purposes,” says Joshua Branch, Founder and Personal Injury Attorney at Law Offices of Joshua W. Branch. “Drivers are not allowed to make upgrades to their vehicles to have red and blue lights because it could cause confusion to other motorists. By making it illegal to use red and blue lights on ordinary vehicles, it allows drivers to quickly recognize a real emergency responder and take appropriate action to move out of the way as required.”

Car lighting rules come from a federal safety standard known as FMVSS 108. It outlines what color lights belong where so other drivers can easily tell what your vehicle is doing.

Red lights go on the back for brake and tail lights.
Turn signals are amber, and headlights or reverse lights are white.
Putting red lights on the front of your car can confuse other drivers and, in many cases, break the law.
Flashing red or blue lights are only for emergency vehicles.

If you plan to add aftermarket or decorative lights, check both federal and state rules first. Lights that flash, change color, or look like police lights usually aren’t legal on public roads.

Other Red Light Rules You Might Not Know

Red arrows: A red arrow always means stop. You cannot turn until the light changes.
“Dead-red” situations: Some states allow motorcycles or bicycles to move through a red light if the sensor fails to detect them after waiting a reasonable amount of time.
“No Turn on Red” signs: These signs override the general rule. If you see one, you must stay stopped until the light turns green.
Yielding always applies: Even when it is legal to turn right on red, you must yield to pedestrians, bicyclists, and any vehicles that have the right of way.
Vehicle lighting compliance: The same federal standards that govern red lights also apply to all vehicle lighting equipment. Modifying your lights in a way that causes confusion for other drivers can be illegal.

About the Experts

Robert Dillman, founder of NEVO Driving Academy, is a veteran driving instructor with experience training everyone from new drivers to professional and security drivers. His background includes high-performance coaching with Porsche and advanced driver training for the U.S. Department of State.
Joshua Branch, Founder and Personal Injury Attorney at the Law Offices of Joshua W. Branch, has spent over 20 years representing accident victims throughout Georgia. He’s recognized with an AV® Preeminent™ rating from Martindale-Hubbell® for his exceptional ethics and trial experience.

Explaining Red Light Laws Across the United States