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Title:

Simulation-Based Comparative Performance Measures for I-295 Express Lanes in Jacksonville, Florida

Accession Number:

01632208

Record Type:

Component

Abstract:

This study was conducted along I-295 project in Jacksonville Florida which is still under construction intended to compare simulated performance measures and predict the benefit between managed lanes and the adjacent general purpose lane. VISSIM a microsimulation software was exploited in the study. In order to overcome operation and functional constraints in VISSIM, VB script was incorporated to make the model more robust. VB script was verified using the decision model equation by comparing managed lane facility share from VISSIM to the calculated share from the logit equation. The model developed reflected the actual site conditions where driver behaviors, speed distribution, and different vehicle classes according to the value of time were modeled in the study. A number of simulation runs were conducted and results averaged to have precise results. Four measures of effectiveness were taken into consideration; Speed, travel time savings, safety in terms of conflicts, and emissions. Since VISSIM gave out trajectory file for conflicts, Surrogate Safety Assessment Model, SSAM, was used to analyze the conflicts. The results obtained from the analysis indicated that there will be lower emissions, conflicts, and fuel consumption in express lanes compared to the adjacent general purpose lane for all levels of service, also travel time will be saved when using managed lanes at any traffic density. Therefore the analysis showed that, I-295 express lane will provide commuters with values of their money and also conserve the environment due to low emissions. This will help transportation agencies to judge on the implementation of the express lanes and make an appropriate decision on the improvements if required.

Supplemental Notes:

This paper was sponsored by TRB committee AHB35 Standing Committee on Managed Lanes.

Monograph Accession #:

01618707

Report/Paper Numbers:

17-06536

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Machumu, Kelvin S
Sando, Thobias
Mtoi, Enock
Kitali, Angela

Pagination:

18p

Publication Date:

2017

Conference:

Transportation Research Board 96th Annual Meeting

Location: Washington DC, United States
Date: 2017-1-8 to 2017-1-12
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Identifier Terms:

VISSIM (Computer model)

Geographic Terms:

Jacksonville (Florida)

Subject Areas:

Highways; Operations and Traffic Management

Source Data:

Transportation Research Board Annual Meeting 2017 Paper #17-06536

Files:

TRIS, TRB, ATRI

Created Date:

Dec 8 2016 12:40PM