Dubbed the Intelligent Bump, this clever system by Mexico-based Decano Industries actually retracts if you're "going slow enough", rewarding cautious drivers. These bumps are priced at an affordable $1,500 each. Continue reading for an animation.
The system uses metal plates that measure the force of an impact against them. Cars going slow enough will cause the plates to lower, though any faster and the speed bump will remain where it is.[via Dvice]