Two Way Traffic Signs

Two-way traffic signs are posted where a multi-lane divided section of roadway transitions into a two-lane, two-way section of roadway. These signs may also be used at intervals along a two-lane, two-way roadway and to supplement Divided Highway Ends signs.

Two-way traffic signs play an essential role in road user safety by helping drivers see and understand a change in traffic movement, since two-way road rules differ from those on a one-way road. A two-way traffic sign also serves as a reminder for a driver to stick to the right-hand side of the road.

Yes, MUTCD Section 2C.44 provides guidance for two-way traffic signs, covering the application of these signs, the use of supplemental plaques, and the design of the two-way traffic sign (W6-3). This section specifies when an AHEAD plaque should accompany the sign and allows the two-way traffic sign to be used at intervals on a two-lane, two-way roadway or as a supplement to a Divided Highway sign.

A two-way traffic sign is used on or before a two-way road to warn drivers about transitioning from a one-way road with unidirectional traffic to a road with opposing traffic, while a divided highway sign conveys that the highway ahead has two lanes of opposing traffic separated by a physical barrier, such as a strip of land, guardrail, or concrete divider.

Fluorescent yellow is approved by the U.S. Federal Highway Administration (FHWA) for use on all yellow warning signs, such as no-passing zone and stop ahead signs, as well as roadway alignment signs like curve arrows and two-way traffic signs. These signs are uniquely conspicuous at the most dangerous times of the day, dawn and early evening.

Orange two-way traffic signs are usually posted in road work zones to regulate traffic flow and ensure worker safety. These signs are offered in three grades of reflectivity: engineer, high-intensity, and diamond. The 3M Diamond Grade Fluorescent Orange two-way traffic sign is the brightest of all, offering high daytime conspicuity and the best nighttime reflectivity.

Two-way traffic signs are made using heavy gauge, 63 and 80 mil thick rustproof aluminum, giving them an outdoor life of at least 10 years. Branded 3M inks and materials used on the signs prevent fading and provide enhanced visibility, and the 3M Smart Shield POF Laminate can be added at checkout to further extend the life of the sign.

Most diamond-shaped two-way road signs are available in 24", 30", and 36" sizes, with the exception of the two-way traffic symbol sign, offered in 12" and 24" sizes. Rectangular two-way traffic signs come in varied sizes starting from 12" x 18" up to as large as 24" x 48" and 30" x 36", with individual sign-specific sizes available on each product page.