01663599

Component

Signalized interchanges have been playing an important role in the roadway system, particularly in urban areas. Among the various interchange configurations, the Single Point Urban Interchange (SPUI) and the Tight Diamond Interchange (TDI) are most commonly used in current practice. Though a number of studies have proved that in general SPUIs outperform TDIs in operational efficiency, however, none of them attempted to compare the operation efficiency of a special SPUI configuration, SPUI with Frontage Road (SPUI-F) with TDI. With this motivation, this paper proposed an evaluation towards SPUI-F and TDI. The research was based on a real case of Reno, Nevada. Layouts of both interchanges were modeled in VISSIM. Three measures of effectiveness(MOEs) which contains average delay, average speed, and average queue length were selected to perform the operational efficiency. The results indicated that the TDI is more efficient in comparison to the SPUI-F. Research findings could provide guidelines for the selection of interchange configurations.

This paper was sponsored by TRB committee AHB65 Standing Committee on Operational Effects of Geometrics.

18-01598

English

6p

2018

Transportation Research Board 97th Annual Meeting

Digital/other

References; Tables

Diamond interchanges; Frontage roads; Single point urban interchanges

VISSIM (Computer model)

Reno (Nevada)

Design; Highways; Operations and Traffic Management

Transportation Research Board Annual Meeting 2018 Paper #18-01598

TRIS, TRB, ATRI

Jan 8 2018 10:25AM