SCSO explains new traffic lights

Published 2:10 pm Wednesday, September 7, 2022

Sheriff Champagne would like to share some information about the flashing yellow arrow traffic signals in St. Charles Parish.  Some motorists are confused by the “new” signals.
These signals include a flashing yellow arrow in addition to the standard red, yellow, and green arrows. When you see a flashing yellow arrow – it means you can turn left, after yielding to oncoming traffic. Make sure you can safely turn left before doing so.
Here’s a breakdown of what each arrow means:
Solid red arrow – Before turning left, you must stop and wait. Do not enter an intersection to turn when a solid red arrow is displayed.
Solid yellow arrow – The left-turn signal is about to change to red, so be prepared to stop or complete a left turn if you are legally within the intersection and no oncoming traffic is present.
Flashing yellow arrow – You may turn left after yielding to oncoming traffic and/or pedestrians in crosswalks. Remember – oncoming traffic has a green light, and you must wait until it’s safe to turn.
Solid green arrow – You have the right of way and may turn left. Oncoming traffic has a red light.
Eventually, the “new” signals will be on all state roadways across Louisiana, where a protected left turn already exists. The use of the flashing yellow arrow was authorized for nationwide use, after extensive testing, in December 2009. Signals have already been installed and are in use in several other states.
Our friends at the Louisiana Department of Transportation & Development have supplied these pictures and a video to further explain the “new” traffic signals. For more information, visit and select – Find projects in my area.