Delineator posts are good for channelizing traffic, or directing traffic in a way so that it knows where to go and doesn’t end up somewhere it shouldn’t. You see these mainly on the highway during a construction project. They come in many different colors, white orange and yellow are the most common.
Reflective bands for the delineator posts can come in 3 or 4 inches. These are good for alerting oncoming traffic because the light of the car reflects off the post. Posts can be either flat top or t-top, which is handle that makes it easier to grab and move around.