The traffic signal at South Memorial Drive and East 41st Street will be off on Thursday, March 5, from 8:30 a.m. to 5 p.m. during installation of an upgraded signal with flashing yellow arrows for permissive left turns. All-way stop signs will be in place during this project.
The flashing yellow arrow directs traffic in the left-turn lane in the same way as the green “ball,” which indicated that a driver must yield to oncoming traffic or pedestrians before turning left.
The arrow for the left-turn lane will be either steady red, steady yellow, flashing yellow or steady green. “Red” will continue to mean “stop.” Steady yellow will mean “prepare to stop.” Flashing yellow will mean “proceed with left turn after yielding to oncoming traffic or pedestrians;” and green will mean “proceed with left turn.”
Signals with flashing yellow arrows for left turns have been included in the Manual on Uniform Traffic Control Devices since 2009, the version which Oklahoma adopted in 2012. These new signals improve traffic flow and safety. They are most helpful at intersections with frequent traffic congestion, high traffic volumes and above-average accident rates.