Virginia Transportation Modeling Program

Current Projects

CUBE Voyager Software Migration

Virginia uses Citilabs' CUBE/Voyager software as its standard travel demand modeling software.

The interface and network editor for this software is called "CUBE Base." The software engine that actually does the computations to run a model is called "Voyager."

Collectively, they are called CUBE/Voyager or Citilabs software.

Most models in the state now are on, or are moving to, the CUBE/Voyager platform.

Models are set up up in a user friendly flowchart format called a CUBE Catalog.

CUBE/Voyager represents a major advance in software capability from older Citilabs' travel demand modeling software products used in Virginia, including VIPER/TP+, TRIPS. TRANPLAN and MINUTP.

National Household Travel Survey

Virginia is one of the major add-on partners to the upcoming Federal Highway Administration (FHWA) 2008 National Household Travel Survey (NHTS).

This effort will conduct 14,000+ full household travel surveys for all Virginia metropolitan planning organizations (MPO), with some additional sampling in other areas for statewide planning purposes.

FHWA is in the process of working out details with the survey contractors and is scheduled to provide Virginia with more detailed information on survey logistics and schedule in Summer 2007.

The survey design and pretest was complete in January 2008.. The surveys are to be conducted over a one-year period, beginning in March 2008.

For more information, visit the NHTS Web site.

Peer Review

VDOT is planning to conduct a peer review of the Statewide Modeling Program and Process, including the Virginia Transportation Modeling Policies and Procedures Manual, in Sping 2008.

For more information, visit the Transportation Model Improvement Program Web site.