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TRANSIMSTRansportation ANalysis and SIMulation System
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a day-by-day evolutionary approach, the TRANSIMS model investigated mobility impacts, travel pattern changes, and departure time shifts with each freeway segment closure.
Using the TRANSIMS model, the researchers were able to analyze travel pattern changes as well as travel reliability.
"This project demonstrated that TRANSIMS is a viable tool for traffic analysis of work zones," says Brian Gardner, leader of the transportation systems performance team in FHWA's Office of Planning and manager of FHWA's TRANSIMS program.
During the last five years, FHWA and EPA have been sponsoring the development of TRANSIMS. Under this sponsorship, the Los Alamos National Laboratory (LANL) (the developer of TRANSIMS) has signed a contract with PricewaterhouseCoopers to partner with U.S.
According to FHWA, TRANSIMS is expected to produce high-quality detailed simulations that will permit planners and citizens to better understand the implications of transportation policy choices.
FHWA said that TRANSIMS, developed at a cost of $25 million, represents a major advance in travel forecasting procedures.
TRANSIMS has been developed through field tests with the North Central Texas Council of Governments, the Regional Planning Agency for the Dallas-Fort Worth metropolitan area, and the Portland, Ore., Metropolitan Service District.
The TRANSIMS design has been driven by legislative and analytical requirements that exceed the capabilities of current models and methodologies.
Department of Transportation (DOT) has provided most of the funding for the development of TRANSIMS. Additional funding has come from the Environmental Protection Agency (EPA).
The Los Alamos TRANSIMS team has incorporated work from researchers across the country into the new models.
Large urban regions represents the geographical scale for which the TRANSIMS simulation capability eventually will be applicable.
TRANSIMS is an ambitious project that will take years to complete and will require the cooperative efforts of modelers both inside and outside the transportation community.