Rules for works at signalised intersections

Rules for works at signalised intersections

Planning to undertake works around signalised intersections? You need to understand the notification and approval requirements before scheduling any work.

In early 2017, Main Roads WA created a Road Planned Interventions Section (RPIS) aimed at overseeing all traffic management approvals for works at signalised intersections. The Main Roads WA Code of Practice for Works on Roadsoutlines the requirements for approval when working around traffic signals on both state and local roads. The Code of Practice, section 6.8.1, currently states that:

If works are expected to interfere in any way with the operation of permanent traffic signals (e.g. switching them to flashing yellow, masking displays, moving traffic lanes so that detectors are no longer functional etc.), approval for these changes shall be sought from MRWA Traffic Operations Centre at least three weeks in advance of the works commencing.”

Since implementing the new section, Main Roads WA have made it very clear that they will not be accepting applications to undertake works around traffic signals when three weeks notice has not been provided. If you proceed without having gained the necessary approvals it could result in a closing down of the site and it can have serious impacts for your traffic management provider.

The Traffic Management Company Registration Scheme states that all works at signals will be scrutinised on site to ensure suitable approvals have been obtained. Any company which is part of the registration scheme and is seen to be implementing unapproved traffic management schemes at signalised intersections may risk losing their registration and ability to carry out works on state-owned roads.

The Main Roads WA desired process for carrying out works at traffic signals is for the contractor to submit a suitable Traffic Management Plan (TMP), endorsed by a Roadworks Traffic Manager (RTM) to at least 15 business days in advance of the proposed start date. The proposed changes to the Main Roads WA Code of Practice will see this advanced notice period extended to 30 business days where works are being undertaken at traffic signals on state-controlled roads.

The process for approval is aimed at ensuring that appropriate analysis by qualified personnel takes place and ensures that congestion is managed around the worksite. Although the notice periods make planning more difficult, the overall effect is a safer worksite with less impact on the road network.


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