MAKING IT USEABLE    Editing       Data Files

Next, the survey data were separated into several different data files:

Household file - data collected once for the household (one record per household).

Person file - data items collected once for each household member (one record for each completed person's interview).

Vehicle file - data items related to the household's vehicles (one record for each household vehicle).

Travel day trip file - data items collected for each trip a person made on the household's travel day (one record for each trip each person made).

Segmented trip file - additional data collected for each of the travel day trips that involved two or more trip segments, at least one of which involved public transit or Amtrak (one record for each segmented trip).

Travel period file - data items collected for each longer trip taken by each person interviewed during a 14-day period (one record for each travel period person trip).

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