Running a Red Light Ticket in California (CVC 21453)

California Red Light Law (CVC 21453)

California Vehicle Code 21453 covers red light violations:

• CVC 21453(a): Facing a steady circular red signal, you must stop at the limit line (or before the crosswalk/intersection)
• CVC 21453(b): Facing a steady red arrow, you cannot enter the intersection for the movement indicated by the arrow
• CVC 21453(c): Right turn on red is permitted after stopping, unless signed otherwise

Types of Red Light Violations

Running a Solid Red

Entering the intersection after the light has turned red. The key question is where your vehicle was when the light changed—if any part of your vehicle entered the intersection before the light turned red, you may not have violated the law.

Failure to Stop Before Turning Right

Right turns on red are legal in California, but you must come to a complete stop first. A rolling stop through a right turn on red is still a violation.

Red Arrow Violation

You cannot make the turn indicated by a red arrow, even after stopping. Unlike a solid red light, a red arrow prohibits the specific movement entirely until the arrow changes.

Red Light Camera vs Officer-Issued Tickets

See our Red Light Camera Ticket Guide for specific defenses against camera tickets.

Defense Strategies

1. You Entered Before the Light Turned Red

The law prohibits entering the intersection on red—not being in the intersection when it turns red. If you entered on yellow and the light changed while you were already in the intersection, you didn't violate CVC 21453.

2. Challenge the Officer's Observation

• Where was the officer positioned?
• Could they clearly see your vehicle and the signal?
• Was their view obstructed by other vehicles or objects?
• Were there multiple vehicles moving through?

3. Signal Malfunction

If the traffic signal was malfunctioning (stuck on red, yellow too short, etc.), this can be a valid defense. Document any signal issues at the intersection and check if others have reported problems.

4. Yellow Light Timing

California requires minimum yellow light times based on speed limits. If the yellow was too short, it may be a valid defense:

• 25 mph zone: 3.0 seconds minimum
• 35 mph zone: 3.6 seconds minimum
• 45 mph zone: 4.3 seconds minimum
• 55 mph zone: 5.0 seconds minimum

5. Emergency or Safety

In rare cases, proceeding through a red light may be justified:

• Yielding to an emergency vehicle
• Avoiding a collision
• Following officer direction

Right Turn on Red Rules

Right turns on red are legal in California with these requirements:

• Complete stop: Must stop completely at the limit line or before the crosswalk
• Yield to pedestrians: Pedestrians in the crosswalk have the right of way
• Yield to traffic: Must wait for a safe gap in traffic
• No sign prohibiting: Must not be a "No Turn on Red" sign

Frequently Asked Questions

Is it illegal to enter an intersection on yellow?

No. You may legally enter an intersection on yellow. The violation occurs only if you enter after the light has turned red. If you entered on yellow and it turned red while you were in the intersection, that's legal.

Can I go to traffic school for a red light ticket?

Yes, if you're eligible (haven't attended in 18 months), traffic school can mask the point from your public DMV record. However, you still pay the full fine plus the traffic school fee.

What if I was following an ambulance through a red light?

Following an emergency vehicle through a red light is still a violation. The exception is if you ran the red light to yield to (get out of the way of) an emergency vehicle—which is different from following it through.

How do red light cameras work?

Red light cameras use sensors to detect vehicles entering the intersection after the light turns red. They capture photos of your license plate and often the driver's face. A citation is then mailed to the registered owner.