Centre for Road Safety

Safety alerts for drivers

Cooperative Intelligent Transport Systems (CITS) use technology to allow vehicles to communicate with other vehicles, traffic signals and roadside infrastructure. The systems are also known as vehicle-to-vehicle communications, or vehicle-to-infrastructure communications.

CITS increase the quality and reliability of information available to drivers about their immediate environment, other vehicles and road users.

How they work

Connected vehicles use dedicated short-range wireless systems. They share information, such as vehicle position, direction and speed, with other connected vehicles at a rate of 10 times per second.

Based on this information, drivers in connected vehicles receive safety alerts about potential dangers. Drivers over the crests of hills or around bends can be warned of risks on the road ahead.

Trials using CITS

The Cooperative Intelligent Transport Initiative is a CITS testing facility for heavy vehicles in the Illawarra region.

Other major CITS trials are underway in Europe, Korea and the United States.

Safer community

With alerts generated from the increased information available, these systems have the potential to improve road safety and the efficiency of the road network.