Car Parks - Advanced technology!

While I was back in Malaysia, I had a few hours stopover in Kuala Lumpur so my brother and his family whizzed us to a newly renovated shopping mall. As we were in the car park looking for a park, the three kids noticed red light indicators above each parking space. Then they figured out that if you see a red light, the space is occupied. A green light meant a free space. We all decided that it was a great gadget as we could see where there is parking in huge car parks from a distance without driving round and round looking for a space! The kids had great fun observing the indicator changes to green as a car leaves the space and turns to red when we took it up.