❓ Hon Ray Halligan asks about traffic congestion management in Perth. The response indicates Main Roads doesn't have a specific list of congested routes but uses real-time data and travel time surveys to manage traffic flow and prioritise improvements based on cost-benefit analysis.
AnsweredQoN 6235Legislative Council
QuestionView source ↗
(1) Does Main Roads Western Australia have a list of roads, intersections or other sections of roads where metropolitan traffic is already operating at capacity and experiencing congestion during peak periods?
(2) If yes to (1), what are the details?
(3) How are priorities for road improvements in these areas determined?
(2) If yes to (1), what are the details?
(3) How are priorities for road improvements in these areas determined?
AnswerView source ↗
Answered
5 June 2008
Responded by
Parliamentary Secretary representing the Minister for Planning and Infrastructure
Response time
30 days
(1) - (3) Traffic congestion is an emerging issue in the Perth metropolitan area. In recent years there are a range of activities undertaken by Main Roads to manage traffic flow in the metropolitan area but there is no list of congested routes per se.
At an operational level Main Roads uses real-time traffic data in the operation of signalised intersections. The data is utilised by traffic operators in the Traffic Operations Centre to adjust signal timing, duration of phases and coordination for the 850-odd traffic signals within WA. Generally, this treatment has proven very effective in maintaining smooth and consistent traffic flows across the metropolitan area.
Annual travel time surveys have been conducted for a number of years to monitor the journey times on key arterial routes, such as the Mitchell and Kwinana Freeways, during peak and off-peak periods. This data has shown an increasing trend in journey times into and out of the city but the overall performance is still deemed to be acceptable.
In September 2007 Austroads published new national performance indicators, which are congestion related, and include travel efficiency (operating speed, variation from posted speed and intersection performance), travel reliability (variation of average operating speed) and productivity (compares operating speed and traffic flow with target levels for high productivity).
Related to these performance indicators, Main Roads is currently installing traffic data collection systems for Perth's freeways such as real-time vehicle detection stations and telecommunication infrastructure.
This will enable implementation of Intelligent Transport Systems along Perth's Freeways in the future. For example, later in 2008 an additional seven variable message signs will be installed along Mitchell and Kwinana Freeways to provide real-time information to motorists and assist in managing congestion.
The prioritisation of improvement projects is undertaken on a cost-benefit analysis basis, taking into account a range of factors of which congestion is but one element.
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At an operational level Main Roads uses real-time traffic data in the operation of signalised intersections. The data is utilised by traffic operators in the Traffic Operations Centre to adjust signal timing, duration of phases and coordination for the 850-odd traffic signals within WA. Generally, this treatment has proven very effective in maintaining smooth and consistent traffic flows across the metropolitan area.
Annual travel time surveys have been conducted for a number of years to monitor the journey times on key arterial routes, such as the Mitchell and Kwinana Freeways, during peak and off-peak periods. This data has shown an increasing trend in journey times into and out of the city but the overall performance is still deemed to be acceptable.
In September 2007 Austroads published new national performance indicators, which are congestion related, and include travel efficiency (operating speed, variation from posted speed and intersection performance), travel reliability (variation of average operating speed) and productivity (compares operating speed and traffic flow with target levels for high productivity).
Related to these performance indicators, Main Roads is currently installing traffic data collection systems for Perth's freeways such as real-time vehicle detection stations and telecommunication infrastructure.
This will enable implementation of Intelligent Transport Systems along Perth's Freeways in the future. For example, later in 2008 an additional seven variable message signs will be installed along Mitchell and Kwinana Freeways to provide real-time information to motorists and assist in managing congestion.
The prioritisation of improvement projects is undertaken on a cost-benefit analysis basis, taking into account a range of factors of which congestion is but one element.
Notice: This document is created or edited using unregistered or evaluation copy of rtLib valid for testing or development purposes only. To use it for productive or any other purposes please register it. You may purchase the license on
http://www.rtlib.com
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