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1st European Conference
Results from road transport
Research in H2020 projects
Tom Brijs, Hasselt University

• develop an integrated methodology to study VRU accidents
and
• improve assessment of VRU-accident costs
InDeV goals:
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• Accident databases (police & medical care)
• In-depths accident investigations
• Traffic conflicts/observational studies
• Naturalistic cycling/walking (mobile app)
• Self-reported accidents
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“Integrated methodology” utilises:

• Accident databases (police & medical care)
• In-depths accident investigations
• Traffic conflicts/observational studies
• Naturalistic cycling/walking (mobile app)
• Self-reported accidents
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“Integrated methodology” utilises:
most development
happens here

Traffic conflicts
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Undisturbed passages
Slight injury
Severe injury
Fatal
Accidents
Serious conflicts
Slight conflicts
Potential conflicts
Damage only

Traffic conflicts
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Undisturbed passages
Slight injury
Severe injury
Fatal
Accidents
Serious conflicts
Slight conflicts
Potential conflicts
Damage only
just one step below
accidents -> very similar

Video processing software:
• Watch-dog
• Semi-automated processing
• Fully automated processing
Mobile app
Technical tools
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Main challenge – stable performance over
LONG period
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Whachdog -> manual check ->
-> trajectory production ->
-> test of indicators –>
-> validation towards accident data
Workflow (in progress)
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• Current status of accident cost calculations in the European countries:
– General structure of valuation methods:
• complies with recommendations of former EU projects (Component structure, valuation
methods), e.g. COST 313, HEATCO, UNITE
– Definitions of ‘fatality’ and ‘injured victim’
• ‘Fatality’ is defined consistently in all EU countries
• ‘Seriously injured’ has very different definitions
– Components and the included items
• Different combinations in every country (see next slide)
– Underreporting
• Is considered in very few countries
Accident cost calculation in EU countries and
its adaptation concerning VRU safety
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• Inclusion of the additional injury category ‘MAIS 3+’
• Average unit costs per casualty
– Include medical costs, production loss and human costs
– Not included: property damage and administrative costs
• Dealing with Underreporting
Accident cost calculation in EU countries and
its adaptation concerning VRU safety
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Next Deliverable: Development of calculation options with an emphasis on VRU
Injury: slight < serious < ‘MAIS3+‘ < fatal

• What type validation is best/feasible?
• What conflict indicators are most valid?
• Performance improvement of technical tools
• Accident cost calculation: What are the options to adapt it to VRU?
• Handbook of safety analysis for vulnerable road users
Remaining work

Thank you very much for your attention!
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 635895
Visit us on www.indev-project.eu
Prof. dr. Tom Brijs, Hasselt University, Belgium
Email: tom.brijs@uhasselt.be