MUTCD R10-14 · Regulatory signs
Requires stopping when emergency signal flashes red
What it means
Requires stopping when emergency signal flashes red.
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 R10-14.)
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.
- R10-12 Requires left-turning vehicles to yield on green signal
- R10-12a Requires left-turning vehicles to yield on flashing yellow arrow
- R10-12b Requires left-turning vehicles to yield to bicycles
- R10-13 Emergency signal operation
- R10-14a Overhead version requiring stop on flashing red emergency signal
- R10-14b To stop when signal flashes red
