Intelligent Speed Assist (ISA) is a safety technology that automatically alerts drivers if they exceed the speed limit.
ISA uses global positioning (GPS) or satellite navigation technology to know what road a vehicle is travelling on. It compares this information with a digital map which contains the speed limit for that road at that location. If the vehicle is travelling faster than the speed limit, the driver will receive a visual and/or audio warning from the ISA device.
Research from around the world has shown that ISA can significantly reduce travel speeds and crashes. Research undertaken by the TAC and MUARC in Australia estimates that ISA can reduce fatal and serious injury crashes by up to eight per cent.
Local and international research also indicates that the use of ISA produces fewer fluctuations in travel speed which results in a higher fuel efficiency and a subsequent decrease in vehicle emissions.
Some portable satellite navigation (GPS) devices already have speed limit information in them and can be set to provide a warning to drivers if they travel over the speed limit.