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You are here:Home Research, Technical Assistance & Training Technology Rail Technology and Systems Information Subway Environment Simulation

Subway Environment Simulation


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Photo: Passengers getting on a train in Washington, District of Columbia

People boarding a train at Court House Station in Arlington, Virginia (W. Raymond Keng, FTA)

Overview
The Subway Environment Simulation (SES) Computer Program and Subway Environmental Design Handbook were developed in the early 1970's under sponsorship of the Urban Mass Transportation Administration (former name of the Federal Transit Administration) to assist in the planning, design, and construction of subway ventilation systems. The SES fulfilled an unmet need in the transit engineering community, and has been widely used in the design of new rail systems or line extenstions in: Washington, District of Columbia; Atlanta, Buffalo, Baltimore, Dallas, Los Angeles, San Francisco, Montreal, Toronto, the Seattle Bus Tunnel, and in rail transit systems around the world. The SES provides tunnel designers with the tools to: properly size and locate ventilation shafts, evaluate tunnel geometry and fan size, optimize temperature, and model the effects of heat and smoke resulting from fires and other sources. The most recent enhancement is the validation of the subroutine which describes the behavior of smoke in emergency conditions.

In mid-1998, SES Version 4 (SESv4) was released, along with an updated User's Manual. SESv4 was designed to operate on a personal computer. It requires a Pentium processor and 64 Megabytes (MB) of Random Access Memory (RAM). It has a front end graphical user interface and runs under Windows 95 or NT operating system.

Current status: This software is no longer publicly available.

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Related Resources

American Public Transit Association (APTA)

Community Transportation Association of America (CTAA)

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Contacts

Please submit questions or comments regarding Transit Research and Technology Programs to:

Terrell Williams
Office of Technology, TRI-20
Federal Transit Administration
400 7th Street, SW
Washington, DC 20590
202-366-0232
Terrell.Williams@dot.gov

Alison Thompson
Volpe National Transportation Systems Center, RTV3-D
U.S. Department of Transportation
55 Broadway, Kendall Square
Cambridge, MA  02142
617.494.2108
Alison.Thompson@volpe.dot.gov

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