Speed Bumps Smooth Out the Ride

Speed bump made of rubber
Image via Wikipedia

Technologies in transportation to keep driving speeds down on low speed roads…

They make a speed bump that’s based on retractors that open if the impact with them is small enough. These speed bumps can be configured so that if a car is going below 30km/h, the speed bump flattens; over 30km/h, the force causes the retractor to stay closed, keeping the speed bump active.

via Speed Bumps That Flatten for Slow Speeds by Jae-yun Kim & Jong-Su Lee » Yanko Design.

This seems to be an expensive alternative to asphalt or plain recycled rubber – does it make sense to invest in technologies like this?