What's to stop someone from throwing out a bunch of jagged glass or nails on the road to puncher someone's tire? Very cheap to deploy and extremely dangerous.

What's to stop someone from throwing out a bunch of jagged glass or nails on the road to puncher someone's tire? Very cheap to deploy and extremely dangerous. The thing that stops this is human decency. And yes, that safeguard does fail sometimes. But fortunately, either situation isn't permanent -- as soon as a cop (or any city employee or private citizen) drives by and sees it (especially the fake traffic light) they can call it in and have it removed in short order.