New approaches to the way Perth’s traffic lights operate may be one of the ways to help ease Perth’s congestion crisis, a new report has shown.

The report, commissioned by the RAC, showed signal retiming can help to reduce vehicle delays at traffic lights by up to 27%.

With congestion expected to cost Western Australia $2.1 billion a year by 2020 and with an additional one million motorised vehicles estimated to be on our roads in the same year, the RAC believes a focus on network management systems is a key part of dealing with the increasing burden of congestion on our State.

The nine month study applied an alternate approach to signal retiming at two demonstration sites – the intersection of Kelvin Road / Tonkin Highway, and four intersections along Orrong Road.

It found the use of micro-simulation modelling software could help get more out of the existing infrastructure and shorter but more frequent green light sequences could help cut delays.

The project was undertaken in partnership with Main Roads WA.

To obtain a copy of the report please email