Instruct: Classify the given Amazon review as either positive or negative.
Query: Cheap; Electronics Don't Work as Advertised

I removed the plastic tab to test the stop sign, but it failed to light up. I started to unscrew the battery compartment and it suddenly worked, but would not stop working. Again, playing with the screws on the battery compartment, it turned off. Bumping into the sign with my car a few times yielding "hit and miss" results (yes...pun intended). The couple of times the sign did light up, it tended to flash endlessly. As others have mentioned, you don't really need the flashing sign to let you know you hit the post. In hindsight, I should have just done the old "tennis ball on a rope" trick. I hope this product was NOT made in the U.S., as it would be too depressing to think we lack the brain power to design and manufacture such a basic product.