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Identification of problems

Stage 1 of the Local Impacts Committee's work on Tasks 2 & 3 identified traffic related problems on roads in the south west metropolitan area. The process, which comprised technical assessment and community consultation, is shown in the Stage 1 process flowchart.

The assessment process, which identified traffic problem types and their locations within the study area, was based on 13 assessment criteria, (shown at right).

Freight Efficiency, General Traffic Efficiency and Public Transport Efficiency are covered by the one problem type, 'congestion'.

Stage 1 included technical assessment of the roads based on a range of criteria, and extensive community consultation by a telephone survey of a (statistically valid) sample of local residents and businesses throughout the study area. The survey was designed to gather comment from the residents and businesses who were asked to comment on traffic related problems.

In all, 11 problem types were identified and a series of technical papers prepared describing the assessment process and outcomes of the investigation of the major problem types.

An overall Stage 1 report was prepared which brought together all the problem types and their locations, and provided a composite view of the “priority action locations” - locations having the worst traffic problems.

View the report "Review of major roads in the south west metropolitan corridor, Stage 1 report, December 2004".

View a summary of this report (PDF, 1.3MB).

Read about developing solutions to the problems.


Local Impacts Committee Criteria


Freight Efficiency
Amount of congestion (mid-block and intersection) hindering large trucks from travelling at a steady speed along the road.

General Traffic Efficiency
Amount of congestion (mid-block and intersection) hindering cars and small trucks from travelling at a steady speed along the road.

Public Transport Efficiency
Amount of congestion (mid-block and intersection) hindering public transport vehicles on public transport routes from travelling at a steady speed along the road.

Safety
Number of crashes relative to the amount of traffic.

Traffic Noise
Degree of traffic noise: daytime and evening; night time.

Air Pollution
Effect on emissions from traffic and from vehicle loads: eg. fumes, soot and odour.

Community Access
Degree of difficulty getting on/off roads when travelling to/from places along the road, when difficulty is caused by traffic along the road.

Vibration
Amount of disturbance to buildings, or annoyance to the people in those buildings, by vibration from traffic on the road.

Water Pollution
Concerns about pollution from vehicles travelling on the road getting into significant water sources; whether ground water, surface water, and/or wetlands.

Built and cultural heritage
Impact of traffic along the road on cultural heritage areas and buildings next to the road, including indigenous or non-indigenous heritage.

Natural heritage
Impact of traffic along the road on natural heritage areas including severance of habitat areas or severance of wildlife migratory routes. The impact may be on vegetation or a wetland area.

Visual amenity
Intrusion of road infrastructure into views from adjacent land or buildings, or the reduction in privacy of adjacent land and buildings from road users overlooking that land or buildings.

Department of Transport