Plympton Park Local Area Traffic Management Plan

Wattle Terrace to Cross Road

The design has been updated, with works scheduled for early 2027.

Updated design

September 2026 Update

Designs are being finalised for the left turn out of Wattle Terrace to Cross Road.

During detailed design works it was identified that closing the northbound movement from Arthur Street would create access difficulties for waste collection vehicles servicing properties along the western side of the street. The design has been revised to address this operational requirement while maintaining the key traffic management objectives of the project.

The revised design will:

-retain the existing left-turn movement from Arthur Street into Wattle Terrace, maintaining local and waste collection access;

-retain the proposed new left-turn exit from Wattle Terrace onto Cross Road; and

-introduce a raised median along Wattle Terrace that prevents vehicles travelling from Arthur Street from accessing the new Cross Road exit, continuing to discourage non-local traffic from using Arthur Street to access Cross Road

The revised arrangement therefore maintains appropriate local access while continuing to support the LATM objectives of improving safety, simplifying traffic movements, and reducing non-local traffic through residential streets

July 2026 Update

Our recently endorsed Annual Business Plan and Budget 2026-2027 has allocated funding for the projects identified by the Local Area Traffic Management Plan (LATM).

The projects will be delivered (detailed below) within the current financial year (2026-2027). Further details will be provided to residents likely to be impacted by the delivery of the projects.

🚗 Wattle Terrace: Adding a new left turn out onto Cross Road, including the removal of northbound access to Wattle from Arthur Street

🚗 Park Terrace: Install speed cushions and adjust lane marking

🚗 Aldridge Avenue Reserve: Add new line marking and DDA kerb ramps

🚗 Elizabeth Ryan Reserve (intersection of Peckham Road and Herbert Street): Add new line marking and DDA kerb ramps

🚗 Herbert Street: Removing right turn onto Cross Road whilst maintaining right turn into Herbert Street

Project plans

Layout plans of the 5 identified projects.

Document Library

December 2025 Update

At the General Council meeting on Tuesday 9 December 2025, council endorsed the Plympton Park Local Area Traffic Management Plan.

The following works will be undertaken when budgets are identified through council's Annual Business Planning process.

🚗 Wattle Terrace: Adding a new left turn out onto Cross Road, including the removal of northbound access to Wattle from Arthur Street

🚗 Park Terrace: Install speed cushions and adjust lane marking

🚗 Aldridge Avenue Reserve: Add new line marking and DDA kerb ramps

🚗 Elizabeth Ryan Reserve (intersection of Peckham Road and Herbert Street): Add new line marking and DDA kerb ramps

🚗 Herbert Street: Removing right turn onto Cross Road whilst maintaining right turn into Herbert Street

Further initiatives will support these capital works, including:

Reclassifying Ferry Avenue as a Collector Road.
Monitoring traffic speeds and volumes following completion of the TGSP and the Villawood development. Page 217
Progressively upgrading key east–west walking links and kerb ramps to improve access to high-frequency public transport.
Reviewing traffic and parking around Plympton Oval in line with any future redevelopment.
Investigating landscaping opportunities within redundant loop roads as they fall due for renewal

Together, this package is intended to improve safety, manage rat-running, support walking, cycling and public transport, and align local streets with Council and State transport planning frameworks

You can also read the community feedback report to see what feedback was provided.

September 2025 Update

At the General Council Meeting held on Tuesday 23 September, Council Members endorsed the draft Plympton Park Local Area Traffic Management (LATM) Plan to go out for community consultation. Community consultation ran from Monday, 29 September to 5 pm, Sunday 19 October, 2025.

A LATM plan consists of the planning and management of road space within a local area. It considers neighbourhood level traffic-related problems, and proposes solutions in context of the local area, rather than in isolation.

You can contact the project team at communityengagement@marion.sa.gov.au or on 8375 6600.

Timeline

Timeline item 1 - complete

Community consultation period

18 November - 9 December 2024
Timeline item 2 - complete

Review of feedback received

December 2024 - February 2025
Timeline item 3 - complete

Development of a Local Area Traffic Management Plan

Early 2025
Timeline item 4 - complete

Proposed plan endorsed by General Council

23 September 2025.
Timeline item 5 - complete

Community consultation on the draft LATM plan to commence

29 September 2025
Timeline item 6 - complete

Consultations closes

19 October 2025 at 5 pm
Timeline item 7 - complete

Community Feedback Report and Final LATM reviewed by Council

9 December 2025: Seeking endorsement of the LATM.
Timeline item 8 - complete

Final LATM released to the community
Timeline item 9 - complete

Finalisation of design for left turn out of Wattle Terrace to Cross Road

September 2026

Frequently Asked Questions

Second exit for traffic balance

Creating a second exit onto Cross Road will help share demand currently funnelled almost entirely through Herbert Street, easing congestion and balancing traffic loads across the network.

Data shows most traffic turns left

Traffic surveys confirm that the majority of vehicles using Herbert Street turn left onto Cross Road at a rate more than three times higher than right-turn movements. This highlights that a second left-out option is the most effective way to manage volumes.

Supports Herbert Street access

Feedback from earlier consultation showed that residents opposed restricting right-out and right-in movements at Herbert Street/Cross Road. Providing an alternative left-out option elsewhere supports Herbert Street residents without removing this access.

Endorsed within this year's Annual Business Plan and Budget 2026-2027, this project is expected to be delivered in early 2027.

Supporting key cycling connections

Park Terrace is an important secondary cycling route providing a direct link to the Mike Turtur Bikeway and tram stations from existing connections such as cycling routes on Bray Street and Hendrie Street. It is essential that the street safely accommodates bicycle movements in both directions.

Addressing current safety risks

At present, southbound cyclists are required to overtake parked vehicles by moving across the centre line into oncoming traffic. This situation creates safety concerns for both cyclists and motorists and requires a safer long-term solution.

Aligning with modern design standards

Having a single-direction bike lane on a road does not meet best engineering practice. A new road design today wouldn’t adopt this approach, so a redesign is needed to bring the street up to contemporary standards whilst promoting active travel modes for the community.

Recognising infrastructure constraints

Due to the existing road geometry and limited space, it is not possible to create fully separated two-way bike lanes or off-street cycling facilities on Park Terrace.

Creating a safer, calmer street environment

The installation of speed cushions will reduce traffic speeds and discourage through-traffic, resulting in a calmer and lower-volume road environment. This makes it suitable for the use of bicycle sharrow markings in both directions.

Raising awareness for all road users

Sharrow markings clearly identify the street as part of a cycling route, improving awareness of the presence of cyclists and reminding motorists to share the road responsibly. This treatment has been installed previously with positive outcomes on City of Marion roads such as Minchinbury Terrace and Addison Road.

Local roads are designed mainly to provide access to homes and properties. They usually carry lower volumes of traffic and are intended for slower, neighbourhood-level traffic. Collector roads, on the other hand, connect local roads to the wider road network. They are expected to carry slightly higher traffic volumes and are more suitable for bus routes, and people travelling across the suburb rather than just within their own street. Road classifications can shape how council manages maintenance, upgrades and investment priorities for streets. For example, higher classification roads may require more monitoring, greater lighting coverage, or more durable road pavements.

Council will be monitoring traffic volumes and speeds in Plympton Park both before and after the Villawood development is occupied. Traffic surveys will be conducted to enable monitoring of daily vehicle numbers and travel speeds on key streets such as Park Terrace, South Terrace, Ferry Avenue, Herbert Street and surrounding roads. Additionally, council welcomes ongoing community feedback which will help identify issues early, especially around safety, parking and pedestrian access. If further investigation highlights unexpected traffic pressures beyond expected levels of service, council can respond with appropriate treatments.

Contact Information
Phone	08 8375 6600
Email	communityengagement@marion.sa.gov.au
Website	www.marion.sa.gov.au
In writing	PO Box 21 Park Holme South Australia 5043

Phone

08 8375 6600

communityengagement@marion.sa.gov.au

Website

www.marion.sa.gov.au

In writing

PO Box 21 Park Holme

South Australia 5043