The model was motivated by a desire to enhance the state’s freight forecasting capabilities and also to provide a framework that can be used to support enhancements to more geographically detailed regional freight forecasts.
Policy sensitivity is sought by the following model enhancements:
The model converts the supply chain information on firms, shipments, and modes into modal trip tables, and assigns these trip tables to a multimodal statewide transportation network. This network consists of highway and railway links, seaports and waterways, airports, and intermodal connectors. The model uses a combination of FAF zones and Florida counties. The model covers the freight movements within, into and out of the entire state of Florida, using a transportation network database that extends to the entire United States and around the world. This statewide model is designed to be integrated with sub-state regional models. These regional models will be able to use cross-boundary freight flows from the statewide model. The statewide model is built on the following seven step framework:
The model covers all of Florida and includes external flows over transportation networks across the USA and internationally. Florida, Georgia and Alabama counties are used to represent within south east region, including within Florida freight flows, keyed to FAF zonal commodity flow totals broken down using county data and the ‘Make’ and ‘Use’ Tables in the 2007 U.S. Benchmark Input-Output Account to determine the type and percentage of commodities used by each industry. Flows with origins or destination outside the state use FAF3’s 123 internal to the USA plus 8 foreign traffic analysis zones.
The model uses the 7 FAF3 modes: Air, truck, Rail, Water, Pipeline, Multiple Modes and Mail, Other & Unknown.
The model uses the 2007 FAF3’s 43 2-digit SCTG-based commodity classes.
The model is intended to support the following FDOT planning activities:
And to be sensitive to policies involving the following:
CUBE Interface; coded in R
Currently being developed
http://www.fsutmsonline.net/index.php?/model_pages/model_pages/
Vidya Mysore
Manager, Systems Traffic Modeling
Tallahassee, Florida
850-414-4924
FDOT Systems Planning Office
Mail Station 19
605 Suwannee Street
Tallahassee, Florida 32399-0450
(850) 414-4901
FAX (850) 414-4876
diana.fields@dot.state.fl.us also vladimir.majano@dot.state.fl.us