The researchers in Britain have developed an in-car computer that will make it impossible for drivers to drive their vehicles beyond the permissible limit of speed. The researchers at Transport for London (TfL) have claimed that they have developed Intelligent Speed Adaption (ISA) system that detects the speed limit and automatically slows down a vehicle if its speed goes beyond the permissible limit.

The developers of the Intelligent Speed Adaption system have reported that the system prevents a vehicle’s speed from crossing the allowed speed limit by automatically slowing down, but it does not affect the brakes. Whenever the speed of an ISA-equipped vehicle crosses the permissible speed limit, the computer slows down the vehicle automatically and gradually.

According to researchers, the ISA system can find the exact location of a vehicle through satellite, and can access a database of every road's speed limit to determine how fast the vehicle should be travelling.

The Transport for London (TfL) is presently testing the ISA system to study the system’s impact on road safety and congestion. The TfL is planning to install the ISA systems, which uses a newly-introduced digital speed limit map of the city of London, in a taxi and 20 of its own vehicles. The TfL runs cars, buses and trains.  

The Head of Transport for London's road safety unit, Chris Lines has said that the ISA system is an innovative technology that could help any driver avoid the unnecessary penalties of creeping over the speed limit and at the same time will save lives. Chris Lines believes there could be around 10 per cent decline in road accidents, if two-thirds of motorists start using the ISA systems.