Transport and Main Roads measuring congestion

Transcription

1 Transport and Main Roads measuring congestion Frans Dekker David Johnston International Roads Federation/Roads Australia Conference Sydney,

2 Overview 1. The why 2. What we do 3. Prioritisation tools 4. Cost of congestion 5. Where we are going? 2

3 Road Operations Action Plan (the why) Sweating asset capacity and providing efficient and reliable road system performance Traffic Management Traffic Incident Management Traffic and Travel Information Intelligent Transport Systems 3

4 Increasing the value of data (the why) Data Great cost and little value Processing Simple as tagging metadata Reporting dashboard What has already happened? Analytics Future scenarios or predictions 4

5 5 Urban Congestion Management Working Group Information Vision, 2008

6 Performance scope (what we do) Service Delivery Statement (SDS) to Parliament and Corporate reports Network performance Austroads reporting Benchmark our performance Project performance Inform investment Evaluate effectiveness Emergency Vehicle Pre-emption, Hero ramp signals Policy assessment Traffic Incident Management Service Region support Tools for regional traffic performance management Support industry services 6

7 What we do Austroads National Performance Indicators (NPI) Desirable characteristics Road users understand and value Useful for operators, managers and senior management Based on readily available technology Has minimal reporting lag Reports at the link, route and network level Can be applied to all modes. Indicator Efficiency Reliability Productivity Base data Measure Travel time per 10km Variation from posted speed Arterial congested minutes per hour Travel time variance between days Speed x flow (as % of optimum) Speed, flow, occupancy, green time Updated nightly Currently stores three years of NPIs and associated data. 7

8 Intersection prioritisation tool Uses congested minutes per hour = Occupancy >20% during green (similar to Degree of Saturation >0.75) Why Investment, benchmarking, limited before/after; handling of complaints What Rank intersection or compare time periods Where STREAMS signals When AM, midday, PM, night, and work hours How User defined periods presented as tables and maps 8

9 Intersection prioritisation tool (cont.) 300+ metro signals, half with < two congested minutes per hour Some ranking changes between months, due to data errors and construction Some changes are challenging to pin-point, for example, network closures, new developments or upgrades Weighted Congested Mins M1130 M1132 M1915 M1116 M1608 M1231 M1975 M1122 M1982 M1419 M1629 M1211 M1415 M1117 M1657 M1113 M1226 M1626 M1223 M1919 M1414 M1216 M1455 M1131 M1225 M1111 M1805 M2134 M1108 M1628 M1128 M1114 M1210 M1806 M1955 M1650 M1118 M1977 M1978 M1119 M1804 M1624 M1420 M1921 M1227 M AM Nov 2013 Feb 2014

10 Intersection prioritisation tool (cont.) 10

11 Intersection prioritisation tool (cont.) 11

12 Route prioritisation tool Uses speed and travel time reliability, weighted by flow. Why Investment, benchmarking, before/after studies, handling of complaints What Rank or compare routes Where Defined routes with STREAMS signals and motorways When Weekday or weekend AM, midday, PM, night, all How User-defined periods presented as tables 12

13 13 Route prioritisation tool (cont.)

14 Cost of congestion ARRB congested speed: Motorways < 70% of posted speed Arterials < 55% of posted speed. 14

15 Cost of congestion State Controlled Roads, Brisbane 15

16 Cost of congestion (cont.) $1.00 Average Cost / Vehicle Kilometres Travelled (VKT) $0.90 $0.80 $0.70 $0.60 $0.50 $0.40 $0.30 $0.20 $0.10 $- Sunday Monday Tuesday Wednesday Thursday Friday Saturday Gympie Rd Sandgate Rd Beaudesert Rd Granard Rd 16

17 Acceptable cost for road user 90% of congestion cost is delay Passenger vehicle delay costs are based on average weekly wage (ABS 2013) Weekly wage distribution (below) could be used to estimate percentage of population who may be prepared to use a toll road. 9.0% 8.0% 7.0% Weekly Cash Earnings Distribution (ABS Jan 2013) Average Weekly Wage 2013 %People 6.0% 5.0% 4.0% 3.0% %People 2.0% 1.0% 0.0% 17 Weekly Cash Earnings

18 Congestion from Bruce Highway incident closure costs $500,000 18

19 Congestion from Bruce Highway incident closure costs ~$500,000 19

20 Next steps Causes of congestion ARRB project Multimodal cost of congestion. 20

21 21 Thank you