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PMSS Project Details


Project ID:FHWA-PROJ-11-0043
Project Name: Signal Phase and Timing (SPAT) with an Intersection Collision Model (101-FH3) Small Business Innovation Research (SBIR) Phase II
Status: Active
Last Name:Gibson
First Name:David P
Office: Office of Operations Research and Development
Team:Trans Enabling Technologies Team
Project Description:Harmonia has developed an index of Traffic EXperimental Analytical Simulation (TEXAS) documentation, documented global variables and subroutines in Simulated Processing (SIMPRO), and added newly developed subroutines into the TEXAS documentation database. Harmonia has developed the Enhanced Traffic EXperimental Analytical Simulation (eTEXAS), a Java Application Programming Interface for the TEXAS Model. We have set up SIMPRO for compilation using free and open source software and modified the TEXAS source code to accomplish the central step of reorganizing TEXAS as a simulation library for programmatic invocation by the Connected Vehicle program or other applications. We have also implemented Java interfaces to the simulation for portability for the Society of Automotive Engineers (SAE) J2735 messages, Variable Message Signs messages, Signal Controller Messaging System (SCMS) messages, and obtaining vehicle updates. In addition, we have developed a graphical user interface for Delta Time (DT) simulation and a simplified Java version of Bonneson's dilemma zone Control Systems (D-CS) algorithm for validation of eTEXAS. Harmonia has also created a project Web site to host the free and open source eTEXAS project, which includes source code, documentation materials, and developer community facilities.
Start Date: May 20, 2011
End Date: May 19, 2015
The key project objective is to determine whether signal phase and timing (SPAT) can be simulated with an intersection collision model and, if possible, whether this simulation can be converted into a tool useful for developing analyses of SPAT.
Test Methodology: Test the approach using the Traffic EXperimental Analytical Simulation (TEXAS) intersection simulation model.
Partners: U.S. Department of Transportation: Research and Innovative Technology Administration (RITA); Role(s): Other stakeholder
Expected Benefits:Signal phase and timing information can smooth traffic flow towards the signalized intersection and possibly reduce the potential for yellow- and red-light running.
Deliverables:Name: Signal phase and timing (SPAT) simulation model.
Product Type(s): Software
Description: The deliverable is an Enhanced Traffic EXperimental Analytical Simulation (eTEXAS) simulation model with abilities to simulate vehicle-to-infrastructure and infrastructure-to-vehicle communications (SPAT-DSRC J2375).
Publication URL(s):
Project Findings:The tentative answer is that signal phase and timing (SPAT) can be simulated with an intersection collision model, and that the combined model might be useful for safety and operations research.
Keywords: Traffic Signal Phases
Dilemma Zone
Highway Traffic Control
Traffic Signal Timing
Subject Areas: Operations and Traffic Management
Safety and Human Factors