CMAP has completed a comprehensive travel and activity survey for northeastern Illinois.* Data collection took place between January 2007 and February 2008. A total of 10,552 households participated in either a 1-day or 2-day survey, providing a detailed travel inventory for each member of their household on the assigned travel day(s). The resulting distribution of the sampled population closely matches northeastern IL’s household population by county. The public use data set is now available for download below. (Data for 1990 are also available below for comparison and trend analyses.)
NOTE: This survey was designed and conducted for use in regional travel demand modeling. The sample size and frame is suitable for that purpose. Proper application of the public dataset is the responsibility of the user.
*An identical survey was done for the three-county northwestern Indiana region. For information related to Travel Tracker data for NW Indiana, please contact the Northwestern Indiana Regional Planning Commission (NIRPC).
Data and Documentation
Click the link below to download the Travel Tracker public data set in MSAccess format. Note that there are six main tables in the database, as described in the following table. In addition, when interpreting the data, be aware that households are divided into five distinct strata, ranging from areas that have minimal access to transit and low population density, to areas that have maximum access to transit and high population density. For details about the data format, sample stratification and other related issues, please see the Data Dictionary and User’s Guide.
|Table Name||Table Description||Notes|
|hh_public||Household descriptors and travel data (e.g., hhsize, income, total trips, etc.) Unique households are identified by the field SAMPN.|
|per_public||Person-level descriptors and travel data (e.g., age, gender, disability, employment, number of trips, etc.). Unique persons (within a hh) are identified by the field PERNO.||PERNO is unique within households. To identify a unique person across households, combine PERNO witih SAMPN.|
|place_public||Trip details (e.g., travel day number, purpose, mode, travelers, tolls, departure and arrival times, distance, etc.) Unique places (per person and day within a hh) are identified by the field PLANO.||The first place in every record is the place where the respondent was at 3am (typically HOME). This is the starting place for their first trip of the day (which goes from PLANO1 to PLANO2).|
|loc_public||Location data anonymized by the centroid of the resident census tract. Unique locations are identified by the field LOCNO.||HOME location numbers are constructed by adding a “9” to the beginning of a household’s SAMPN.|
|transit_public||Detailed data for multiple segments that make up one public transit trip (or the transit segments that make up the transit portion of a mixed-mode trip that includes transit). Fields include boarding location, type of fare paid, distance to final destination, etc.|
|veh_public||Detailed data for all vehicles in the household (e.g., year, make, model). Unique vehicles (within a particular hh) are identified by the field VEHNO.|
Download the Data
NOTE: In December 2016, the 2007-08 Travel Tracker