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| Description
| - For local road safety evaluations traffic accident frequency has been traditionally used; however it has been also known that accident occurrence is statistically rare and thus their data collection is time consuming. To this end various other means have been investigated, including observation of traffic conflicts (near-accidents). Traffic conflict happens when two road users approach each other to such extent that, if no action is taken, a collision occurs. These surrogate measures may enable collection of larger samples and quicker safety assessment. There have been various traffic conflict techniques developed around the world, using different approaches to assessing the conflict types and severity levels. For example Czech traffic conflict technique uses assessment based on the severity of evasive manoeuvre assessed by observers on the site. However using evaluations by human observers has been criticized as subjective and potentially biased. Among others the use of microscopic traffic simulation was thus attempted. Micro-simulations are usually used to estimate the operational performance of road networks; their traffic safety applications have appeared more recently. The paper presents the pilot study whose objective was to compare the results of simulated traffic conflict data with the observation using Czech traffic conflict technique. A busy signalized junction in Brno was chosen for this purpose. Software S-Paramics was used for the micro-simulation, employing the severity indicator of time-to-conflict, in which two vehicles will collide if no actions are taken. To test the results reliability, traffic conflicts were both observed and simulated in two terms with different traffic volumes (summer and autumn 2013). The paper presents the study approach and results, as well as discussion of pros and cons and practical conclusions.
- For local road safety evaluations traffic accident frequency has been traditionally used; however it has been also known that accident occurrence is statistically rare and thus their data collection is time consuming. To this end various other means have been investigated, including observation of traffic conflicts (near-accidents). Traffic conflict happens when two road users approach each other to such extent that, if no action is taken, a collision occurs. These surrogate measures may enable collection of larger samples and quicker safety assessment. There have been various traffic conflict techniques developed around the world, using different approaches to assessing the conflict types and severity levels. For example Czech traffic conflict technique uses assessment based on the severity of evasive manoeuvre assessed by observers on the site. However using evaluations by human observers has been criticized as subjective and potentially biased. Among others the use of microscopic traffic simulation was thus attempted. Micro-simulations are usually used to estimate the operational performance of road networks; their traffic safety applications have appeared more recently. The paper presents the pilot study whose objective was to compare the results of simulated traffic conflict data with the observation using Czech traffic conflict technique. A busy signalized junction in Brno was chosen for this purpose. Software S-Paramics was used for the micro-simulation, employing the severity indicator of time-to-conflict, in which two vehicles will collide if no actions are taken. To test the results reliability, traffic conflicts were both observed and simulated in two terms with different traffic volumes (summer and autumn 2013). The paper presents the study approach and results, as well as discussion of pros and cons and practical conclusions. (en)
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| Title
| - Road safety evaluation using traffic conflicts: Pilot comparison of micro-simulation and observation
- Road safety evaluation using traffic conflicts: Pilot comparison of micro-simulation and observation (en)
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| skos:prefLabel
| - Road safety evaluation using traffic conflicts: Pilot comparison of micro-simulation and observation
- Road safety evaluation using traffic conflicts: Pilot comparison of micro-simulation and observation (en)
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| skos:notation
| - RIV/44994575:_____/14:#0001351!RIV15-MSM-44994575
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - I, P(ED2.1.00/03.0064), P(EE2.3.35.0030)
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/44994575:_____/14:#0001351
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - road safety; traffic conflict; micro-simulation (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - Proceedings of the Second International Conference on Traffic and Transport Engineering
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Ambros, Jiří
- Turek, Richard
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open...ain/vavai/riv/wos
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| http://linked.open.../riv/zahajeniAkce
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
| - City Net Scientific Research Center
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| https://schema.org/isbn
| |
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