About Journey to Work: Florida Edition
The purpose of the web site is to consolidate transportation related census information and disseminate the information to the public, decision makers, and the planning community. This project builds on a previous CUTR initiative which produced a series of publications examining trends in Florida's demographics and journey-to-work travel behavior.
The data is based on the 2000 Census Transportation Planning Package (CTPP). The CTPP data are from the decennial census designed for transportation planners and are tabulated from answers to the Census 2000 long form questionnaire, mailed to one in six U.S. households.
The web site allows the user to access charts, tables and maps of the commuting patterns for a particular Census Designated Place (CDP) or County in Florida. All data used by this web site, utilize data directly extracted from the CTPP data CD's. The Journey to Work data (commuter flows) are from Part III of the CTPP. The Part III data are preliminary data that is still being reviewed by the state Metropolitan Planning Organizations (MPO). Please note that the data are PRELIMINARY, and are undergoing evaluation by State DOTs and MPOs. Once these agencies examine the data and ensure that there were no processing errors, Census Bureau will finalize the data, and BTS will post the data.
About CTTP 2000
The Census Transportation Planning Package 2000 (CTPP 2000) can provide your organization with accurate and comprehensive data it needs to make informed decisions. CTPP provides tabulations of households, persons and workers. It summarizes information by place of residence, by place of work, and for worker-flows between home and work.
CTPP 2000 is a set of special tabulations from the decennial census designed for transportation planners. The data are tabulated from answers to the Census 2000 long form questionnaire, mailed to one in six U.S. households. Because of the large sample size, the data are reliable and accurate. CTPP provides comprehensive and cost-effective data, in a standard format, across the United States.
Uses of the CTPP Data
Transportation planners use CTPP data to:
- Evaluate existing conditions
- Develop or update travel demand models
- Analyze demographic and travel trends
- Evaluate existing conditions
Further information about uses of the CTPP can be found at: http://www.fhwa.dot.gov/ctpp/about.htm
What data is in the CTPP 2000?
All the data from the CTPP 2000 is derived from the Census 2000 long form which addresses information on such household and travel characteristics as:
- Household size
- Income
- Vehicle availability
- Worker age
- Gender
- Occupation
- Earnings
Work location based data
- Departure time for work
- Travel mode (i.e. bus, car or carpool)
- Arrival time to work
- Travel time to work
Summary of the Data
The CTPP summarizes the long form records into tables designed by and for transportation planners. These tables are consistent with tables from previous transportation census packages (1990 CTPP and 1980 UTPP). Local governments worked with the Census Bureau to define traffic analysis zones (TAZs) for the tabulation.
The tables summarize characteristics by:
- Place of residence
- Place of work
- Place of residence by place of work
The tables can be used as is, exported into other analysis programs, or used to generate GIS maps and other forms of data presentation. CTPP helps you present complex data to the general public and decision makers.
Using data from you can:
Analyze the effectiveness of the existing transportation system in serving the mobility needs of the population
- Analyze commuting and demographic trends over 10 or 20 years
- Plan new transit services and improve existing routes to serve specific populations
- Design and weight household travel surveys
CTPP helps you develop tools to examine future conditions. You can:
- Build and calibrate travel demand forecasting models
- Project the level of congestion along a specific corridor
- Forecast the potential market for new or expanded highway or transit facilities
- Forecast vehicle emissions for compliance with the Clean Air Act.
Above From: http://www.fhwa.dot.gov/ctpp/data.htm
CTPP Helps You Plan the Future
CTPP is an extremely useful source of data to design, build, and calibrate travel demand forecasting models.
The commuter flows are a great source of data to validate home-based work trip tables.
Accurate measures of persons, workers, and households by socio-economic characteristics, such as income and vehicle ownership, provide primary building blocks for trip generation models.
The time-of-day, trip length, and travel time information can be used to calibrate trip distribution relationships.
The distribution of modes used by workers for travel between specific geographic areas provides a wealth of information for calibrating and validating mode choice models.
Travel demand forecasts developed with CTPP data are prime inputs into vehicle emissions forecasts. These emissions forecasts are required for compliance with the Clean Air Act.
Above From: http://www.fhwa.dot.gov/ctpp/planning.htm
Census Transportation Planning Package 2000 Documentation
More information about CTPP is available at http://www.fhwa.dot.gov/ctpp/.
