Curve and Turn Signs

Curve & Turn Signs FAQ

What does a winding road sign mean?

A winding road sign (MUTCD W1-5) is a yellow diamond showing three curves. It warns that the road ahead has three or more successive curves, so drivers should slow down and stay alert through the series of bends. A single S-curve uses the reverse curve or reverse turn sign instead.

What is the difference between a curve sign and a turn sign?

Both are yellow warning signs, but a curve sign (W1-2) shows a gentle bend for roads where traffic can stay near the normal speed, while a turn sign (W1-1) shows a sharp right-angle arrow for a much tighter turn that requires slowing well down. The turn sign warns of the sharper, lower-speed change in direction.

What does the double arrow / two arrows sign mean?

A yellow sign with two arrows pointing left and right (MUTCD W1-7, Large Double Arrow) marks a point where the road ahead ends or an obstruction divides traffic, telling drivers they may go either left or right around it. It is commonly posted at T-intersections and median noses.

What is a chevron alignment sign?

A chevron alignment sign (W1-8) is a yellow sign with a single sideways V (chevron). A series of them is mounted along the outside of a sharp curve to show its direction and sharpness, guiding drivers through the bend.

What does a sharp turn sign look like?

A sharp turn sign is a yellow diamond with a right-angle (90-degree) arrow, warning of an abrupt change in road direction. For a gentler bend the sign uses a smooth curved arrow (curve sign) instead.

What color and shape are curve and turn warning signs?

They are yellow diamonds with black symbols, the standard MUTCD format for warning signs. An advisory speed plaque (for example 25 MPH or 35 MPH) is often mounted below to recommend a safe speed for the curve.

What size are curve and turn signs, and can I add an advisory speed?

Common sizes are 24x24, 30x30, and 36x36 inches. Any sign in this category can be paired with a customizable advisory-speed (W13-1P) plaque, and signs are printed on rust-proof aluminum with reflective sheeting.