SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/drive-pennant-no-passing

A sideways yellow triangle sign on the LEFT side of the road says what?

NO PASSING ZONE, posted where the no-passing zone begins.

  1. SLOW CHILDREN
  2. ROAD NARROWS
  3. NO PASSING ZONE ✔

Why: The pennant shape, a long triangle pointing right, belongs only to NO PASSING ZONE. It sits on the left side so drivers thinking about passing see it.

Huh, didn't know that: The pennant points right, toward the roadway, and marks the beginning of the no-passing zone.

The dad joke
I failed my test on the no passing zone sign. Guess I just didn't pass.
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References

Answer: NO PASSING ZONE. The pennant shape, a long triangle pointing right, belongs only to NO PASSING ZONE. It sits on the left side so drivers thinking about passing see it.

  1. MUTCD 11th Edition, Chapter 2C, Section 2C.53 mutcd.fhwa.dot.gov/pdfs/11th_Edition/Chapter2c.pdf
    shall be installed on the left-hand side of the roadway at the beginning of no-passing zones
    Checked 2026-10-09.
  2. MUTCD 11th Edition, Chapter 2C, Section 2C.53 mutcd.fhwa.dot.gov/pdfs/11th_Edition/Chapter2c.pdf
    shall be a pennant-shaped isosceles triangle with its longer axis horizontal and pointing to the right
    Checked 2026-10-09.

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