MUTCD R7-21aP · Regulatory signs
Supplemental plaque indicating parking payment requirements
What it means
Supplemental plaque indicating parking payment requirements.
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 R7-21aP.)
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.
- R7-9a Alternative design prohibiting parking in bike lane area
- R7-10 Requires vehicles to park by backing in only
- R7-20 Location of parking fee payment station
- R7-21 Limits parking to two hours with meter payment during specified times and days
- R7-22 Metered parking during specified times and days
- R7-107 Prohibits parking in designated bus stop area
