MUTCD R10-27 · Regulatory signs
Allows left turn after stop and yield on flashing red arrow
What it means
Allows left turn after stop and yield on flashing red arrow.
What to do about it
It is a regulatory sign: it states a law you must obey, not a suggestion. Ignoring it is a citable violation. (MUTCD R10-27.)
Practice this on the real test format
Signs are the part of the DMV written test people fail on, because reading them is a skill rather than a fact to memorize. Aprobify drills all 1034 of them, and tells you why each answer is what it is.
Get the appSign designations follow the MUTCD and the California MUTCD published by Caltrans; meanings are checked against the California Driver's Handbook (DL 600, rev. 6/2025). Edited by Fernando Aguilera. Aprobify is not affiliated with the California DMV.
Signs in the same family
These sit next to it in the regulatory signs series — the ones most easily mixed up with it.
- R10-23a Requires stop on red, then yield on flashing red after stopping
- R10-24 Push button for bicycles to request green light
- R10-25 Instructions to push button for warning lights and wait for traffic gap
- R10-26 Bicycle push button for green light with directional arrow
- R10-28 Limits to one vehicle per green signal phase
- R10-29 Limits to one vehicle per green signal phase in each lane
