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California traffic signal rules

Signals let strangers take turns without talking. The cases that confuse people (arrows, flashing lights, a dark signal) are the ones test questions like to ask about.

Checked Oct 11, 2026 · official sources linked

13 rules · 13 written-test points

Key points, in our words

The idea behind it

Roadfeel’s road-sense principles

  • Be predictable Surprises are what turn small mistakes into crashes. Signals, a steady speed and shared tie-breakers let strangers predict each other without talking.
  • Right-of-way is given, not taken Having the right-of-way doesn’t make a crash less painful. Never assume others will yield, and give up your turn when it prevents a collision.

All the rules, in our words

Tags show the kind of rule and whether it’s a written-test point or matters on the drive test (our tagging). Each rule links to its official source.

  1. Solid red means stop at the limit line. You may then turn right after yielding to pedestrians, unless a NO TURN ON RED sign is posted.

    Changed 2026-01-01: Cities and counties may run a new kind of red-light camera program. Its tickets go to the registered owner and are civil: $100, then $200, $350 and $500 for repeat violations within 3 years; no points. Older red-light camera programs can still run under the old rules. The handbook doesn’t say this yet. California bill SB 720 (2025-26)

    New York differs: In New York City you may not turn on a red light at all, right or left, unless a sign posted there permits it. New York rule

    Law Written test · Drive test California Driver Handbook: Laws and Rules of the Road

  2. A red arrow means stop and stay stopped, with no turning in that direction, until a green light or green arrow appears.

    Law Written test · Drive test California Driver Handbook: Laws and Rules of the Road

  3. Treat a flashing red light like a STOP sign: come to a full stop, then proceed when it’s safe.

    Law Written test · Drive test California Driver Handbook: Laws and Rules of the Road

  4. A steady yellow light means red is next: stop if that’s safe; otherwise go through the intersection carefully.

    Law Written test · Drive test California Driver Handbook: Laws and Rules of the Road

  5. A yellow arrow means your protected turn is ending. If you can’t stop safely or are already in the intersection, finish the turn carefully and watch the next signal.

    Law Written test California Driver Handbook: Laws and Rules of the Road

  6. A flashing yellow light means slow down and proceed carefully; you don’t have to stop.

    Law Written test California Driver Handbook: Laws and Rules of the Road

  7. A flashing yellow arrow lets you turn, but the turn isn’t protected; yield to oncoming traffic before turning left.

    Law Written test · Drive test California Driver Handbook: Laws and Rules of the Road

  8. Green means go, but first yield to any vehicle, bicyclist, or pedestrian still in the intersection, and don’t start if anything blocks your path.

    Law Written test · Drive test California Driver Handbook: Laws and Rules of the Road

  9. Don’t enter an intersection, even on green, unless you can get all the way across before the light turns red; blocking it is illegal.

    Law Written test · Drive test California Driver Handbook: Laws and Rules of the Road

  10. A green arrow gives you a protected turn in the arrow’s direction, because oncoming traffic is held by a red light.

    Law Written test California Driver Handbook: Laws and Rules of the Road

  11. When a traffic signal is dark or not working, stop as you would at an all-way stop, then go when it’s safe.

    Law Written test · Drive test California Driver Handbook: Laws and Rules of the Road

  12. A flashing DON’T WALK or raised hand tells pedestrians not to start crossing, but drivers must still yield to anyone already in the street.

    Law Written test California Driver Handbook: Laws and Rules of the Road

  13. WALK or a walking figure lets pedestrians cross, a steady DON’T WALK means they may not, and countdown numbers show seconds left; without pedestrian signals, walkers follow the traffic light.

    Law Written test California Driver Handbook: Laws and Rules of the Road

Practice this chapter in the app · FreeLights that trip people upRed arrows, flashing lights, dark signals6 min · CardsStart this lesson

Sample questions

3 of our 38 practice questions for this chapter, with explanations. The rest are in the app.

Sample question 1/3

You are stopped at a red arrow pointing right. There is no traffic. What may you do?

  1. Stay stopped until a green light or green arrow appears
  2. Turn right after a full stop
  3. Turn right only if no pedestrians are present
  4. Turn right if you yield to cars on your left
Show answer

Answer: A. Stay stopped until a green light or green arrow appears

A red arrow means stop and do not turn, because that signal controls your turn itself, even when the road looks empty. Right on red is allowed at a solid red light, not a red arrow.

California Driver Handbook: Laws and Rules of the Road

Sample question 2/3 Common mistake

You reach a solid red light where you plan to turn right. No sign prohibits it, and no cars or people are anywhere near. May you roll through the turn at walking speed without stopping?

  1. Yes; when the way is clear, a right on red needs no stop
  2. Yes, if you signal and keep to walking speed
  3. No; you must first come to a complete stop at the limit line
  4. No; right turns are never allowed on a red light
Show answer

Answer: C. No; you must first come to a complete stop at the limit line

A solid red means stop: with no NO TURN ON RED sign, you may turn right only after a complete stop at the limit line. This gives you time to check for people and cars. Then yield to pedestrians and traffic before you go. Slowing to a crawl isn’t a stop.

California Driver Handbook: Laws and Rules of the Road

Sample question 3/3

You’re about to reach an intersection when the light turns yellow. You’re so close that stopping would mean slamming on your brakes and sliding into the crosswalk. What should you do?

  1. Brake hard anyway; yellow always means stop
  2. Speed up to beat the red light
  3. Stop in the crosswalk and wait for green
  4. Cautiously continue through the intersection
Show answer

Answer: D. Cautiously continue through the intersection

When you can’t stop safely, proceed through the intersection with caution: yellow warns that the light is about to turn red. Stop if you safely can.

California Driver Handbook: Laws and Rules of the Road

35 more practice questions for this chapterKeep practicing in Roadfeel

Sources

Restated in our own words from the California Driver Handbook (DL 600, rev. 6/2025) and dmv.ca.gov. The handbook is licensed CC BY-NC 4.0, which bars commercial reuse, so we don’t reproduce it; we quote short phrases and link to it.

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