Benchmarking road safety 1 29 november 2012 Comparing areas to stimulate progress in road safety dr. Letty Aarts (SWOV) ing. Rob van den Ban (city of Amsterdam)
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Benchmarking road safety 1 29 november 2012
Comparing areas to stimulate progress in road safety
dr. Letty Aarts (SWOV) ing. Rob van den Ban (city of Amsterdam)
29 november 2012 Benchmarking road safety 2
How it all started…
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Amsterdam 0.79 million inhabitants 0.88 million bikes
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Differences and similarities between areas…
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Grouping comparable areas
The Hague
Utrecht Rotterdam
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Do we understand this?
The Hague
Amsterdam
Utrecht
Rotterdam
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Characteristics of G4 in the Netherlands (2008)
City Area (acers) Inhabitants Road length (km)
KSI crashes (2000-2009)
Amsterdam 16 593 747 093 1 980 2 752
Rotterdam 20 889 595 504 2 113 1 944
Utrecht 9 476 294 737 1 159 974
The Hague 8 190 475 681 1 151 1 098
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Explanations for differences (2008)
City Inhabitants/ area
Road length/1000 inhabitants
KSI crashes/ inhabitants
KSI-crashes/ road length
Amsterdam 45 2.65 3.68 1.39
Rotterdam 29 3.55 3.26 0.92
Utrecht 30 3.93 3.30 0.84
The Hague 58 2.42 2.31 0.95
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Road safety patterns in G4
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Share of fatal road crashes (1990-2011)
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Framework and context
SUNflower studies (SafetyNet): • 1e study: SUN-countries • 2e study: SUN+6 • 3e study: SUN-flower next
PIN-studies (ETSC)
DaCoTA (2010 - 2012) RS composite index
Grouping layer
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Highly urban Moderatly urban Rural mixed Rural plain Nature
Example of municipality grouping Amsterdam
Rotterdam
Utrecht
The Hague
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Shares per area type Area type Share of land Share of serious
crashes
Highly urban 4.0% 22.4%
Moderately urban 9.5% 22.3%
Rural mixed 21.3% 20.0%
Rural plain 55.9% 26.7%
Nature 9.3% 8.5%
Name Title 14
Example: serious pedestrian crashes
Highly urban
municipalities
Very low share Low share Moderate share High share Very high share
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Concluding
• Further steps – Explanations in better exposure measures (data!) – Further in-depth explanations (risks SPIs)
• Benchmarking road safety – Grouping of homogeneous areas – Basic similarities: structure and culture layer – Tune to relevant characteristics & local views – Normalize for exposure differences in risk? policy making?
29 November 2012 Benchmarking road safety
THANK YOU FOR YOUR ATTENTION
Further information
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