University project uses an iPhone to increase a car's fuel efficiency
By putting their skills and knowledge to good use, a group of smart fellows from MIT and Prinston University has found a clever way to increase a car's fuel efficiency by a substantial amount. How did they do it exactly? Why, by making sure that the car remains idle at traffic lights as little as possible... and by using an iPhone.
In a nutshell, the whole magic is done by placing the iPhone on the car's dashboard so that it can monitor the traffic lights ahead of the car's path with its camera. In the meantime, the car's speed is being updated in real time using the phone's GPS radio. After some quick calculations, the system will inform the driver whether it is best to drive slower in order to avoid coming to a complete stop at the next traffic light and then having to bring the vehicle back in motion.
Project SignalGuru in action
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