If I were the pickup truck slinging mud doing donuts in a farmer's field type I guess I'd have a blinky light too. Actually, I do have one, but it doesn't go on my vehicles, on or off road. It's on my bench. I don't remember why. Never being pulled over is terrible evidence of legality. I never got pulled over for not having my off road lights covered. I drove that way for ten years. You couldn't miss them. I actually don't know why I never got pulled over for that.