Sign shapes and colors — New Mexico Permit Test

Warning signs are usually yellow with black lettering or symbols, and most are diamond shaped.

Knowing the look of a warning sign lets you spot danger ahead before you can read the words.

These signs are usually yellow with black lettering or symbols and most are diamond shaped.

Work area signs are generally orange with black letters or symbols and warn that people are working on or near the road.

Orange tells you workers may be close to your lane, so you can slow down before you reach them.

These construction, maintenance or emergency operations signs are generally diamond or rectangular shaped, orange with black letters or symbols and warn you that people are working on or near the roadway.

A reflective orange triangle on the rear of a vehicle means it is traveling less than 25 mph.

You may come up on a farm tractor or a wagon much faster than you think, so you need to slow early.

A reflective orange triangle on the rear of a vehicle means it is traveling less than 25 mph.

Destination signs are square or rectangular and green or brown with white lettering.

The color tells you at a glance that the sign is about where to go, not about a rule or danger.

Destination Signs—These signs are square or rectangular shaped and are green or brown with white lettering.

Service signs are square or rectangular and blue with white letters or symbols.

Blue signs help you find gas, rest or a hospital fast, which matters most when you are tired or in need.

Service Signs—These signs are square or rectangular shaped and are blue with white letters or symbols.

What color and shape are most warning signs?

Yellow with black symbols, diamond shaped. Knowing the look of a warning sign lets you spot danger ahead before you can read the words. New Mexico Driver Manual, p.4: “These signs are usually yellow with black lettering or symbols and most are diamond shaped.”