|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
Analyzing work zone effects on vehicular flow on an annular freeway with a tunnelстатья
- Авторы: Zhongmin Huang, Smirnova M.N., Smirnov N.N., Zhu Zuojin
- Журнал: Fundamental Research
- Год издания: 2022
- Издательство: KeAi Communications Co., Ltd
- Местоположение издательства: Beijing, China
- Первая страница: 1
- Последняя страница: 30
- Номер статьи: FMRE 408
- DOI: 10.1016/j.fmre.2022.09.018
- Аннотация: This paper develops a three lane continuum model to analyze the effects of a workzone on vehicular flow on an annular freeway with a tunnel. The model expresses themandatory lane changing rate just upstream of the work zone in an explicit algebraicform with the relevant random parameter generated from golden section analysis, anddescribes the discretionary lane changing rate between adjacent lanes with a lanechanging time depending on local traffic flow density and relaxation time. It isassumed that the annular freeway has three lanes, a work zone with a length of 0.2 kmand lane II completely blocked, an upstream tunnel of 1.5km long, and an initial jambetween the tunnel and work zone. The three lane continuum model is applied invehicular flow simulation with a 3rd order accuracy numerical scheme. Numericalresults also indicate that golden section application in the analysis of work zoneeffects is helpful in obtaining density thresholds of traffic jam formation, the timeaveraged traffic speed through the tunnel, dependencies of mean travel time, andvehicle fuel consumption on the initial density normalized by jam density. Numericalresults reveal that there are two density thresholds of traffic jam formation, if bothdensity thresholds are normalized by traffic jam density, the first threshold relating tothe work zone is 0.14, while the second depending on the tunnel is 0.21. In theabsence of a work zone, the mean travel time through lane I is slightly longer thanthat estimated for cases with a work zone. As soon as initial density is above thesecond threshold, the time averaged speed through the tunnel is 31.91 km/h, which agrees well with published data.
- Добавил в систему: Смирнов Николай Николаевич