Construction Traffic Management Plans (CTMP/CTIA)

When is a Construction Traffic Management Plan required?

A construction site, regardless of its size, creates some disruption to the transport network, so managing or minimising that disruption while gaining approval from road authorities is a real challenge. An increasing number of Planning Permits are issued with a condition requiring a Construction Traffic Management Plan (CTMP) prior to the start of construction. For some projects this is a specific Planning Permit condition; for others it's a given requirement due to the size of the development.

What is included in a Construction Traffic Management Plan?

A CTMP typically forms part of the overall Construction Management Plan (CMP). In short, a CTMP outlines the methodology for safely and efficiently managing the flow of vehicles, pedestrians, cyclists and other transport modes associated with the construction site, as well as regular road users operating in the vicinity of the worksite. It specifies the construction methodology, timelines, movement frequencies and volumes of construction vehicles, haulage routes and associated swept path diagrams, pedestrian and cyclist management treatments, and any road closures or detours. Traffic Guidance Schemes (TGS) and Traffic Management Plans (TMP) also form part of the overall CTMP document, illustrating the placement of temporary traffic management devices relative to the site.

Typical inclusions of a CTMP are:

• Background - site conditions, existing parking and access provisions, existing road network features, nearby active and public transport provisions, responsible road authorities and crash data.
• Project Details - construction activities including hours of operation, methodology, delivery schedule, volume and frequency of trucks, haulage requirements, worker parking requirements and site contact details.
• Traffic Management Strategy - access and egress arrangements, loading bays, haulage routes, road closures and detours, changes to parking conditions, pedestrian and cyclist management, impacts on public transport and general traffic, stakeholder approvals and notification strategies.
• Drawings - existing and proposed conditions in the form of Functional Layout Plans (FLPs) for each construction stage, and Traffic Guidance Schemes as required.
• Supporting Documentation - Road Safety Audits, Swept Path Analysis and haulage route diagrams.

Construction Traffic Impact Assessments (CTIA)

A Construction Traffic Impact Assessment (CTIA) is closely related to a CTMP, but focuses more on investigating potential impacts in depth, while a CTMP focuses on the strategies for managing each stage of the project. The City of Melbourne, for example, requires every Construction Management Plan to contain a Construction Traffic Impact Assessment, and each council has its own specific requirements regarding CTIAs and CTMPs.

Preparing a Construction Traffic Management Plan for larger sites requires substantial traffic engineering analysis, including investigation of existing traffic volumes, road network features, signal phasing, traffic management treatments and road safety concerns, and at times the design of temporary treatments such as turning lanes, median islands or new signal phasing. The team at RedSquare Traffic has a strong track record preparing CTMPs, with established relationships across Victorian councils and a clear understanding of their expectations.