Western Australia is a step closer to getting its first point-to-point speed cameras, with the first trial location to be along Forrest Highway.

The cameras, also known as average speed enforcement cameras, calculate the amount of time it takes a vehicle to travel between two points, and compare the average speed with the speed limit. If a driver is found to have exceeded the limit then a ticket can be issued.

The trial found 90 per cent of those speeding were exceeding the limit by between one and nine kilometres, while around 10 per cent were exceeding 120 kilometres an hour.

WA Police began reviewing tender submissions to install the camera technology in December, along with accompanying bids to install additional intersection cameras, fixed speed cameras and mobile cameras across Perth.

Point-to-point speed cameras are common in other Australian states with Victoria being the first to implement the technology in 2005.