About: Estimation of Accident Frequency at Newly-built Roundabouts in the Czech Republic

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Roundabouts have become one of the most popular traffic easing and safety improving measures implemented on roads in the Czech Republic. The decision on he ealization of each new roundabout should be based on the knowledge of the expected realization costs and benefits resulting from the future operation, especially changes in traffic and safety performance. This study introduces a negative binomial regression model that enables the quantification of the safety performance of roundabouts in terms of accident frequency in relation to their traffic and geometric characteristics. Model design and estimation of parameters is based on the sample of 90 roundabouts situated on all types of roads in the Czech Republic. Results suggest that the number of accidents depends on the number of lanes on entering arms, vehicle speed in the vicinity of roundabouts, width of traversable apron and, of course, also on the annual average daily traffic. Resulting model structure is in accordance with structures of accident prediction models used in other EU countries and the US. Certain differences can be found in the degree of effects of particular model variables. Roundabouts have become one of the most popular traffic easing and safety improving measures implemented on roads in the Czech Republic. The decision on he ealization of each new roundabout should be based on the knowledge of the expected realization costs and benefits resulting from the future operation, especially changes in traffic and safety performance. This study introduces a negative binomial regression model that enables the quantification of the safety performance of roundabouts in terms of accident frequency in relation to their traffic and geometric characteristics. Model design and estimation of parameters is based on the sample of 90 roundabouts situated on all types of roads in the Czech Republic. Results suggest that the number of accidents depends on the number of lanes on entering arms, vehicle speed in the vicinity of roundabouts, width of traversable apron and, of course, also on the annual average daily traffic. Resulting model structure is in accordance with structures of accident prediction models used in other EU countries and the US. Certain differences can be found in the degree of effects of particular model variables. (en)
Title	Estimation of Accident Frequency at Newly-built Roundabouts in the Czech Republic Estimation of Accident Frequency at Newly-built Roundabouts in the Czech Republic (en)
skos:prefLabel	Estimation of Accident Frequency at Newly-built Roundabouts in the Czech Republic Estimation of Accident Frequency at Newly-built Roundabouts in the Czech Republic (en)
skos:notation	RIV/44994575:_____/11:#0000884!RIV12-MSM-44994575
http://linked.open...avai/predkladatel	Centrum dopravního výzkumu, v.v.i.
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(CG711-078-160), P(ED2.1.00/03.0064)
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Ambros, Jiří Šenk, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Centrum dopravního výzkumu, v.v.i.
http://linked.open...dnocenehoVysledku	197981
http://linked.open...ai/riv/idVysledku	RIV/44994575:_____/11:#0000884
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	accident prediction model; roundabout; negative binomial model (en)
http://linked.open.../riv/klicoveSlovo	roundabout accident prediction model negative binomial model
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[38B31A530E6C]
http://linked.open...i/riv/nazevZdroje	Transactions on Transport Sciences
http://linked.open...in/vavai/riv/obor	JO
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Development of road traffic safety improvement measures effectivity evaluation methodology Transport R&D Centre
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	4
http://linked.open...iv/tvurceVysledku	Ambros, Jiří Šenk, Petr
issn	1802-971X
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.2478/v10158-011-0018-4
is http://linked.open...avai/riv/vysledek of	Estimation of Accident Frequency at Newly-built Roundabouts in the Czech Republic

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