No Thru Traffic Signs

No thru traffic sign enforceability depends on road ownership. On public streets, an official R11-4 sign posted by the city or DOT is enforceable as a regulatory sign. On private roads, enforcement is based on private property and trespassing laws, with the owner controlling access.

"No Thru Traffic" (R11-4) and "Local Traffic Only" (R11-3a) convey the same MUTCD message: the road is closed to through traffic but open to local traffic, and the signs are interchangeable. A "Dead End" (W14-1) sign indicates that the road terminates with no outlet.

MUTCD rules apply to private roads open to public travel if required by state law. Even when not mandatory, using MUTCD-compliant signs is recommended, as non-compliant signage may increase liability in the event of an injury.

A private road is located on privately owned property and is not open for general public use. An easement is a legal right-of-way allowing specified individuals to cross land owned by another party. Posting a no thru traffic sign helps indicate that a private road is not a public through route.

Yes. Because a private road is private property, a driver who uses it without the owner's permission may be charged with trespassing. Posting a no thru traffic or private road sign provides clear notice and supports enforcement under trespassing law.

To request a no thru traffic sign for a public street, contact your city or county traffic authority or local DOT. They will review the road and install an official R11-4 sign if appropriate. For private roads or driveways, you may post your own sign without approval.

Place the sign at the entrance to the road or driveway, on the right-hand side, so drivers see it before turning in. On public roads, mount the sign at least 7 feet above the pavement in urban areas and 5 feet in rural areas.

No thru traffic signs are constructed from rust-free.080" aluminum with 3M reflective sheeting that meets ASTM D4956 standards, available in Engineer Grade, High Intensity Prismatic, or Diamond Grade. The aluminum resists rust, and the reflective sheeting ensures legibility in headlights for at least 10 years.

No thru traffic signs serve as traffic-calming tools that discourage drivers, including those following GPS-directed shortcuts, from using residential or private roads as cut-through routes. Fewer through vehicles result in less speeding and noise, creating safer conditions for pedestrians and residents, especially when the signs are clearly placed.