The few I’ve seen around me don’t have any warning signage. I knew what they were when they went up about 2 years ago. I could be getting the details twisted, but one of the guys that invented these is now against lobbying against them. I want to say he’s originally from Huntsville. He was back in town for the holidays & held a seminar about them

Originally Posted by hillmp
The left lane is for the the purpose of moving the flow of traffic forward regardless of the speed limit. If your impeding the flow of traffic get your ass in the right lane. It's really that simple...