In late 2014, the Office of the Auditor General (OAG) initiated an audit to investigate how effectively our infrastructure and traffic management projects were addressing congestion in metropolitan Perth.

Following the audit’s completion, the OAG reported that “Main Roads has delivered a number of projects that have mitigated congestion on parts of the network and within the CBD”. In line with one of the recommended actions, we have commenced development of a new five-year Congestion Management Plan.

During the year, we completed a number of projects to manage congestion including Clearway Management in the CBD helps keep traffic moving and ensures the safety of other road users.

• An on-ramp merge trial and works program reduced traffic flow breakdown on major freeways and highways.
• An upgrade of three interchange off-ramp locations on Roe Highway improved the capacity of the off-ramps and improved traffic flow.
• A Traffic Signal Review Program optimised traffic signals across the arterial road network.
• We delivered new sections and upgrades of Principal Shared Paths (PSPs) along Mitchell Freeway PSP, Midland PSP and Fremantle PSP.
• More technology was introduced across the road network, including closed-circuit television (CCTV) and data collection devices to better manage incidents and congestion.

We are working towards providing a smart, coordinated and proactive approach to managing traffic congestion now and into the future.