A device has been invented by a German car-maker that will let the motorists to avoid red lights. The name of this gadget is Travolution and it informs the drivers to drive at a specific speed so that when they arrive at the traffic lights, it is green.

The formula behind this gadget is that once installed inside the car, it plots the position of the vehicle and the distance from the next set of traffic signals. Following this, the optimum speed is displayed by it on a screen.

This device was invented by Audi and he reported, "It will benefit the environment by cutting exhaust emissions because fewer cars will be stationary at lights, saying also that it will improve fuel economy by ending stop-start inefficiency. This device could be vital in meeting European Union emissions standards."

The gadget however needs to be tested carefully in variety of traffic conditions in order to be sure that other motorists are not caused any trouble from it. Tests are expected to be conducted next year.