“I had the green light” is a common account after an intersection crash. Vehicle Code 21453 describes duties at red signals, including distinctions between a circular red light and a red arrow. Identifying the actual signal and movement is essential before drawing conclusions from that account.

Stopping at a circular red signal

Subdivision (a) requires stopping at the marked limit line; where none exists, the stopping location moves to the near-side crosswalk or, if there is no crosswalk, before entering the intersection. The driver generally remains stopped until a signal permits proceeding, subject to the turn provision. Where the vehicle was when the signal changed can therefore be important.

Permitted turns after a stop

Subdivision (b) allows certain turns after the required stop unless a sign prohibits them: a right turn, or a left turn from a one-way street onto a one-way street. The turning driver must yield to the pedestrians and closely approaching vehicles described in the statute. Permission to turn is not permission to roll through the stop or cut across an immediate hazard.

A red arrow requires separate attention

Subdivision (c) addresses a steady red arrow. A driver may not make the movement indicated by that arrow until a signal permits it. The permitted-turn language for a circular red signal should not be applied automatically to a red arrow. Photographs of the signal heads and lane arrows can help distinguish the rules that governed the movement.

How to investigate conflicting light accounts

Record the travel direction, lane, intended maneuver, point of impact, and location of each witness. A witness may have seen a signal for a different direction or a nearby intersection. Original video, timestamps, and the intersection’s signal operation can help clarify the account. A signal schedule alone may not establish the phase at the precise collision moment, especially where operation responds to traffic.

A hypothetical right-turn collision

A driver stops at a circular red light and turns right into an approaching vehicle’s path. The claim is not resolved merely by proving the driver stopped. The yielding requirement and the approaching vehicle’s speed and position still matter. Conversely, an approaching driver’s assertion of right-of-way does not answer every question about reasonable care.

From signal evidence to an injury claim

Preserve scene photographs, witness contacts, the report and supplements, and potential video sources promptly. Explain when symptoms began and retain medical and wage-loss documentation. Fault may involve multiple acts, and compensation is not guaranteed by a code reference. Keep original evidence even when a particular item appears unfavorable; selective clips can misrepresent the sequence.

Questions to organize your records

  • Was the signal circular red or a red arrow?
  • Was a turn-prohibition sign present?
  • Which signal could the witness actually see?
  • Do video times reliably match the collision time?

Official statute and related guidance

Read Vehicle Code 21453. For the standards governing a presumption based on a statutory violation, see Evidence Code 669.

Also read our Vehicle Code accident overview, our comparative-fault guide, and our guide to collision reports and fault.

Discuss your accident with Weiss Attorneys

For a review of the collision and injury records, learn about our California car accident representation, read Scarlett Farrokh’s attorney profile, or request a consultation. Call (213) 583-0977. This guide provides general information; the applicable law, deadlines, and remedies depend on the facts.