Review on Homebrite 77102 Park N Place Battery-Operated Lights Stop Sign - Portable Parking Guide by Thomas Chalecki

Batteries were DOA but I've had one of these for years and you don't really need it to light up. The rod is flexible enough that if you tap the bumper lightly, the sign will wobble and you'll know you've pulled far enough. Based on other reviews I used a weight to keep it from rolling forward and found that a terracotta flower pot placed upside down on a pole works well. Just make sure the pot is shorter than your bumper. Hopefully the weight will keep me from knocking it over when I'm lounging around the garage and breaking the stop sign on the garage floor so I don't have to replace it again. I've had the first for 15 years so overall they're holding up well. UPDATE: The batteries appear to be working but the connection needs some loosening and it took some wet weather for them to start working.