Smart Freeway - Kwinana Northbound
Analysis identified a pressure point on Kwinana Freeway northbound between Roe Highway and the Narrows Bridge. This area suffers severe congestion due to high traffic volumes entering from Canning Highway.
The Smart Freeways Project aims to address this problem by creating an additional lane. We will utilise the emergency lane between Canning Highway and the Narrows Bridge as a full time running lane, known as All Lane Running.
Smart technology will be used to open and close traffic lanes in the event of an incident and adjust speed limits to get more traffic through during busy periods. This is similar to the system already used in the Northbridge Tunnel.
A Smart Freeway is the best solution for this constrained area where the railway and the Swan River prevent traditional widening. It will provide motorists with greater journey reliability, saving time, reducing costs and enhancing safety.
Smart Freeways are used successfully around the world to manage congestion, improve safety and get the most out of existing infrastructure.
Our Smart Freeway will involve multiple features, including:
- All Lane Running: creation of an additional lane by transitioning the emergency stopping lane for use by general traffic between Canning Highway and Narrows Bridge.
- Lane Use Management System: safely enabling all lane running by implementing a smart system to close and reopen traffic lanes, adjust speed limits and provide emergency access during incidents, similar to the system used in the Northbridge Tunnel.
- Variable speed limits: used to improve traffic flow by adjusting the speed limits based on traffic volumes and conditions.
- Emergency stopping bays: provided at regular intervals for vehicles to use in case of breakdown or incident.
- Automatic Incident Detection systems, installed between Canning Highway and the Narrows Bridge, alert our operators to any incidents or breakdowns, while CCTV cameras allow further investigation.
- Coordinated Ramp Signals: installed at on-ramps to help balance the flow of traffic onto the freeway and improve merging at Farrington Road, South Street, Leach Highway and Cranford Avenue.
- Comprehensive CCTV coverage: linked to our central Road Network Operations Centre.
- Driver information: facilitated through electronic message signs on the freeway informing motorists of traffic conditions ahead in real-time.
This project is being delivered by SmartWays Alliance, which includes Main Roads, BMD Constructions, Ventia, and Arup.