What shape and colour is the horizontal alignment (curve) sign?

A diamond, coloured yellow. Its official MUTCD code is W1-2R.

A yellow diamond-shaped sign like this one tells you that:

There is a hazard or a change in road conditions ahead

A law is being enforced at this point

You are entering a construction zone

There is a service or rest area nearby

Horizontal Alignment (Curve) Sign (W1-2R)

The horizontal alignment (curve) sign is a diamond and its colour is yellow. It is a warning sign: something ahead — a curve, a crossing, a change in the road — needs you to slow down and adjust what you are doing.

At a glance

Shape	diamond
Color	yellow
Category	Warning signs
MUTCD code	W1-2R

Public domain — Wikimedia Commons

How the test asks about it

0 of 1 answeredScore: 0/1

1.
A yellow diamond-shaped sign like this one tells you that:
Not quiteCorrect answer: A — There is a hazard or a change in road conditions ahead
Yellow diamonds are general warning signs: a curve, a merge, a hill or another hazard is ahead. They advise you to slow down and prepare, but they do not by themselves carry a legal speed limit.
Orange diamonds — not yellow — mean a work zone. Same shape, different colour, different meaning.

Related signs

See all signs

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