Influence of Selected Vehicle Maneuvers on Reduction of the Urban Roads Capacity

https://doi.org/10.26552/com.C.2019.4.81-89

  • Jan Celko
  • Matus Kovac
  • Kristina Huszarova
Keywords: traffic, urban roads, capacity, traffic flow, simulation

Abstract

Capacity assessment of urban roads according to Slovak standard does not sufficiently take into account the influence of vehicle maneuvers on road section performance between the two intersections. This research analyzed turning relations on selected urban road intersections and the influence of right turn and left turn on major stream speed changes. For the purpose of determining the influence of the right turn on decrease in capacity, measurements were carried out at 7 uncontrolled intersections with curve radius ranging from 6 to 30m. To determine the influence of the left turn on the capacity of urban road a critical gap was evaluated, using the Raff’s, method, based on the analysis of accepted and rejected gaps in the major traffic stream, which was one of the main inputs for simulations. The findings were used to determine the influence of selected maneuvers on the road capacity, which led to a proposal for reduction coefficients based on computational analysis performed using simulations in PTV VISSIM.

Author Biographies

Jan Celko

Department of Highway Engineering. Faculty of Civil Engineering, University of Zilina, Slovakia

Matus Kovac

Department of Highway Engineering. Faculty of Civil Engineering, University of Zilina, Slovakia

Kristina Huszarova

Freelance researcher, Zemianske Kostolany, Slovakia

Published
2019-10-01
How to Cite
Jan Celko, Matus Kovac, & Kristina Huszarova. (2019). Influence of Selected Vehicle Maneuvers on Reduction of the Urban Roads Capacity. Communications - Scientific Letters of the University of Zilina, 21(4), 81-89. https://doi.org/10.26552/com.C.2019.4.81-89
Section
Civil Engineering in Transport