Modeling Data and Resources

Surveys and Data

All COG/TPB travel models are empirically estimated and calibrated using observed data. Here are some of the major sources of observed data:

• 1990 Census Transportation Planning Package (CTPP);
• 1993 Baltimore Regional Household Travel Survey (conducted by the Baltimore Metropolitan Council);
• 1994 COG/TPB Household Travel Survey (HTS);
• 1994 COG/TPB Auto External Survey;
• 1994 Metrorail Passenger Survey;
• 1996 COG/TPB Truck Internal Survey;
• 1996 COG/TPB Truck External Survey;
• 2000 Census Transportation Planning Package (CTTP);
• 2000 Regional Bus Survey; and
• 2002 Metrorail Passenger Rail Survey.

Surveys in Progress

The following surveys are currently in progress.  Data collection has occurred.  Current work includes geocoding, data cleaning and documentation.

• 2007 Metrorail Passenger Survey;
• 2007/2008 COG/TPB Household Travel Survey (HTS);  This also has a Baltimore component;
• 2008 Regional Bus Survey;

Web Resources

• Association of Metropolitan Planning Organizations (AMPO)
• AMPO Travel Modeling Work Group.  This web page includes a “Knowledge Base of Travel Modeling Resources and Research from MPOs,” including from COG/TPB.
• Institute of Transportation Engineers (ITE)
• Transportation Research Board (TRB)
• U.S. Census
• U.S. DOT Travel Model Improvement Program (TMIP)