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California road sign W18-1 — There are no traffic control signs ahead at intersection

MUTCD W18-1 · Warning signs

There are no traffic control signs ahead at intersection

What it means

Warns that there are no traffic control signs ahead at intersection.

What to do about it

It is a warning sign: the yellow diamond warns of a condition ahead so you can slow down and be ready before you reach it. (MUTCD W18-1.)

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.

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Sign 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 warning signs series — the ones most easily mixed up with it.

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