FLORIDA DEPARTMENT OF TRANSPORTATION
Center Identification Number: 473-14
Project Title: Worksite Trip Reduction Model and Manual
External Project Contact:Michael Wright, Program Manager, FDOT
I. Project Objective
To develop a Worksite Trip Reduction Model and Manual that will estimate the vehicle trip reduction impacts of various combinations of transportation demand management (TDM) on reducing vehicle trips.
II. Project Abstract
Transportation engineers and urban planners rely on the Institute of Transportation Engineers' Trip Generation Manual and the Parking Generation Manual to estimate the traffic impact and parking needs of new developments. These estimates drive public policy regarding growth and development. The trip generation estimates predict the traffic volumes of these development proposals and decisions regarding developer provided improvements are tied to these estimates. The link between development and available capacity is especially in areas with insufficient roadway "supply" to absorb the new development without degrading the level of service. The parking manual is used to establish minimum parking requirements. What are missing are modifications to the demand side of the equation. How would worksite trip reduction programs reduce the estimated number of vehicle trips? This project proposes to compile the thousands of worksite trip reduction plans that have been developed and tracked for several years from a few urban areas in the country.
The project will focus on updating the data from the three cities that participated in 1997 with the development of the FDOT Research Center-funded project to develop software to predict worksite trip reduction impacts based on programs, incentives and disincentives provided by the employer. The update also will investigate the availability of additional data sets. From this model, a Worksite Trip Reduction Manual will be produced.
III. Task Descriptions
Task 1: Literature Review and Site Visits
A review of the current worksite trip reduction programs, including Rule 2202 in Los Angeles, Commute Trip Reduction law in the State of Washington, and the air quality based trip reduction requirements in the Phoenix and Tucson areas, will be conducted. Site visits may be arranged at existing worksite trip reduction programs in the United States to explain the project, view data handling procedures, and seek their cooperation with the sharing of data for the development of the worksite trip reduction manual and model. A description of data issues and operational difficulties encountered in the development of these types of projects will be prepared.
Task 2: Acquire and Compile Worksite Trip Reduction Data.
Using the results of Task 1, the research team will acquire and compile the data in a similar format for analysis.
Task 3: Model development and validation.
Using various modeling techniques, a model will be developed to predict the impacts of worksite trip reduction programs. The research team will validate the model with a subset of the data not used to build the model. NCTR Researchers will develop the Worksite Trip Reduction Manual will be as a standalone product.
Task 4: Review Worksite Trip Reduction Manual and Model
FDOT and peer reviewers will review and comment on the worksite trip reduction modal and manual.
Task 5: Final manual and model.
NCTR researchers will provide final versions the manual and model. NCTR researchers will provide ten (10) copies of the manual and model to FDOT's central office.
IV. Student Involvement
Graduate students will be used in the collection and compilation of data into a common format. They will assist in the development of the model and validation as well as the user interface design.
V. Relationship to Other Research Projects
The project would involve a literature
review of current worksite trip reduction models including the TDM Model and the
COMMUTER model particularly in the United States. FHWA is moving toward an
update to the Employer Guidance Manual from the FHWA TDM Series and has interest
in a manual method for projecting results.
NCTR researchers will participate in conferences such as the Institute of Transportation Engineers, the Association for Commuter Transportation, Transportation Research Board annual or mid-year conferences and other transportation conferences or workshops. As part of this project, NCTR researchers will make the model and manual available for download on the NCTR website. NCTR researchers will notify known previous users of the CUTR_AVR model. An announcement of its availability will be posted on the NCTR TDM listserv (currently reaching ~450 TDM professionals in Florida, U.S. and abroad). In addition, NCTR research team will make a brief streaming video and PowerPoint presentation explaining the project for easy access on the Internet. Proposed peer reviewers for this project include Wayne Berman with FHWA, Eric Schreffler with ESTC and director of research for the Association for Commuter Transportation's TDM Institute, and Erik Herzog with EPA. NCTR will invite additional reviewers from the industry, in particular those areas that provide the data from which the model is developed.
VII. Potential Benefits of the Project
Developers, local communities, and the
transportation system should benefit from this project. Quantifiable impacts of
various mixes of worksite trip reduction plans will allow developers, local
communities and transportation professionals to do the following:
VIII. TRB Keywords
Transportation demand management, trip reduction, congestion, Telework
National Center for Transit Research · at the Center For Urban Transportation Research · University of South Florida · 4202 E. Fowler Ave., CUT100 · Tampa, FL 33620-5375 · (813) 974-3120 · (813) 974-5168 · www.nctr.usf.edu · Comments: firstname.lastname@example.org