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Title:

Using VISSIM to Model Capacity of U-turns at Unsignalized Intersections with Non-traversable Median Cross Sections

Accession Number:

01152308

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

In this study, a procedure was proposed to help transportation professionals model capacity of U-turns at unsignalized intersections with non-traversable median cross sections in VISSIM. Using data collected from 13 different locations, the input values for behavioral features of U-turning drivers, such as the priority rule, lane selection, and turning speed of U-turns were determined. A procedure was proposed to calibrate and validate the VISSIM simulation model. Simulation results of the calibrated VISSIM model were compared to field measured capacity, as well as the capacity estimated using gap acceptance model developed in our previous studies. The calibrated VISSIM simulation model yields a Mean Absolute Percent Error (MAPE) of 17% and 16.6% for 4-lane and 6-lane streets, respectively. The results show that VISSIM provides reasonable capacity estimates for U-turns at unsignalized intersections with raised median cross sections, after crucial parameters are properly defined and calibrated.

Monograph Accession #:

01147878

Report/Paper Numbers:

10-3710

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Liu, Pan
Qu, Xu
Wang, Wei
Cao, Bing

Pagination:

15p

Publication Date:

2010

Conference:

Transportation Research Board 89th Annual Meeting

Location: Washington DC, United States
Date: 2010-1-10 to 2010-1-14
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures (7) ; References (11)

Identifier Terms:

VISSIM (Computer model)

Subject Areas:

Highways; Operations and Traffic Management; I73: Traffic Control

Source Data:

Transportation Research Board Annual Meeting 2010 Paper #10-3710

Files:

TRIS, TRB

Created Date:

Jan 25 2010 11:53AM