R6 Series — One-Way and Directional Signs
Regulatory Signs · CA MUTCD Part 2, Chapter 2B
The R6 Series includes ONE WAY signs used to establish and reinforce one-directional travel on a roadway. R6-1 (ONE WAY with left arrow) and R6-2 (ONE WAY with right arrow) are used in California work zones wherever a road or lane is reduced to one-way operation — including temporary contraflow lanes, crossovers, and channelized single-lane segments where head-on conflicts must be eliminated.
California Field Use Notes
R6 signs must be posted at both ends of a one-way segment and at any intersection approach where drivers could enter the one-way road from the wrong direction. In California, one-way operation established by a TCP requires agency authorization. On divided highways, temporary crossovers require R6 signs to prevent drivers from traveling the wrong way on the median opening.
Showing 2 of 2 signs
Indicates that traffic on the roadway flows in one direction only, to the left, as shown by the horizontal arrow.
Indicates that traffic on the roadway flows in one direction only, to the right, as shown by the horizontal arrow.
Educational reference only. This is not an official Caltrans, FHWA, or local agency publication and is not legal or engineering advice. Always verify sign selection, size, placement, spacing, and application against the current CA MUTCD 2026, Caltrans sign specifications, Standard Plans, project documents, and the reviewing agency’s requirements.
Need R6 Series signs for a California project?
Public Ready can help you source, rent, or purchase R6 Series signs and integrate them into a compliant traffic control plan. For work zone compliance support, visit WorkZoneCompliance.com.