Stop or Punish / road traffic

Freeway entrance, reverse driving are very dangerous, drunken driving or unknown reason often resulting in fatal car crash. So how to prevent straying into reverse driving lane is a very important issue.
This is stop device designed to prevent a reverse car into freeway. When the vehicles reverse into the freeway, the stepper will bounce, withstand the cars which going through, making it can not move forward. When cars are in the right direction, the stepper will not in action. This design is a simple structure, easy to install, and can prevent more unfortunate occurrence.