Alternative Ways to Determine the Critical Time Gap at Unsignalized Intersections

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Alternative Ways to Determine the Critical Time Gap at Unsignalized Intersections

Popis výsledku v původním jazyce

The capacity of an unsignalized intersection, a quantifiable measure of intersection performance, is defined as the maximum number of vehicles that can pass through an intersection during a specific period. On a three-legged intersection, the most capacity limiting traffic stream is the one in which vehicles approaching from a minor street are about to turn left and merge with vehicles approaching from a major street. The process of calculating the capacity of unsignalized intersections in The Czech Republic is described within the Technical Guidelines no. 188 (TG188) published by the Ministry of Transport of the Czech Republic. The calculation is based on traffic flow and a parameter called the critical time gap. TG188 offers an empirically obtained formula for calculating the critical time gap, which depends only on the speed that 85 % of major street vehicles exceed. This paper discusses an alternative approach to determine the critical time gap for individual intersections, therefore increasing the accuracy of calculating the unsignalized intersection's capacity.

Název v anglickém jazyce

Alternative Ways to Determine the Critical Time Gap at Unsignalized Intersections

Popis výsledku anglicky

The capacity of an unsignalized intersection, a quantifiable measure of intersection performance, is defined as the maximum number of vehicles that can pass through an intersection during a specific period. On a three-legged intersection, the most capacity limiting traffic stream is the one in which vehicles approaching from a minor street are about to turn left and merge with vehicles approaching from a major street. The process of calculating the capacity of unsignalized intersections in The Czech Republic is described within the Technical Guidelines no. 188 (TG188) published by the Ministry of Transport of the Czech Republic. The calculation is based on traffic flow and a parameter called the critical time gap. TG188 offers an empirically obtained formula for calculating the critical time gap, which depends only on the speed that 85 % of major street vehicles exceed. This paper discusses an alternative approach to determine the critical time gap for individual intersections, therefore increasing the accuracy of calculating the unsignalized intersection's capacity.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20104 - Transport engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Young Transportation Engineers Conference 2020

ISBN

978-80-01-06793-2

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

171-176

Název nakladatele

Fakulta dopravní

Místo vydání

Praha

Místo konání akce

Prague

Datum konání akce

19. 11. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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