Left-turn and red-light rules in California
A left-turn crash and a red-light crash can involve different Vehicle Code rules. Section 21801 addresses yielding during a left turn. Section 21453 addresses red signals. A legal analysis must connect the relevant rule, what a person did, and the harm that followed.
Sources: Vehicle Code §21801 — Left turns ↗ · Vehicle Code §21453 — Red signals ↗
Proof of signal timing and vehicle movement
Sketch the direction each car was going. Note whether a light changed, a view was blocked, or a car entered after traffic stopped. Save the names of nearby businesses that may have video. Do not assume a traffic camera recorded footage or that a camera ticket identifies the driver in an injury case.
Sources: California Vehicle Code ↗ · Civil Code section 1714 ↗
READ THE DECISIONS
Court decisions relevant to san jose intersection crashes: left turns, red lights, and fault
Alarid v. Vanier
(1958) 50 Cal.2d 617, pp. 621–624
A broken safety law could lead to a starting assumption of fault. The court said proof of a valid excuse could overcome it.
Limits of this decision: The case predates shared-fault rules. Read today’s statutes and instructions with the case.
Read the opinion ↗Li v. Yellow Cab Co.
(1975) 13 Cal.3d 804, pp. 827–829
A person can share fault and still have a negligence claim. Their share of blame can reduce the recovery.
Limits of this decision: This does not set anyone’s fault percentage. Other limits and defenses can still matter.
Read the opinion ↗Review information for this guide is recorded above. Read each decision with its stated limits.
Legal and agency sources for this page
Use the sources to read the underlying rule or current official process. A source link is not personal legal advice.
- Vehicle Code §21801 — Left turns ↗
- Vehicle Code §21453 — Red signals ↗
- California Vehicle Code ↗
- Civil Code section 1714 ↗
- Li v. Yellow Cab Co. (1975) 13 Cal.3d 804 ↗
- Alarid v. Vanier (1958) 50 Cal.2d 617 ↗
Reviewed by Andrew Ronald Gillin · 2026-11-05 · Review and correction process