| Field Name | Description |
|---|
| Houseid | Household identification number | |
| Proxy | Proxy respondent for person data | |
| RAge | Age of sample person | |
| RSex | Sex of sample person | |
| CensusDivision | Census division | |
| CensusRegion | Census region | |
| Worker | Respondent is a worker | |
| Driver | Person is a driver D9 | |
| Hhvehcnt | No. of vehicles in household (derived) | |
| Howfaru | Units of reported distance: B-Blocks, M-Miles | |
| Msasize | Size of MSA of household | |
| Tripnum | Travel Day Trip Number for Respondent | |
| Hhtripid | Trip number for household travel day | |
| Personid | Person ID number | |
| Segment1time | Start time for segment 1 | |
| Segment1Min | Duration of segment 1 (min) | |
| Segment2time | Start time for segment 2 | |
| Segment2Min | Duration of segment 2 (min) | |
| Segment3time | Start time for segment 3 | |
| Segment3Min | Duration of segment 3 (min) | |
| Segment4time | Start time for segment 4 | |
| Segment4Min | Duration of segment 4 (min) | |
| Segmentnum | Number of segments (derived) | |
| Strttime | Start time of trip | |
| Transfer | If changed mode from/to pub trans | |
| Tripmiles | Distance (miles) | |
| TrvlMin | Travel time (min) | |
| Varstrat | Sample stratum | |
| Whytrp95 | Purpose of trip (1995 definition) | |
| Wttrdfin | Final travel day trip weight | |
| Drvrcnt | Number of drivers in HH | |
| Hhfaminc | HH family income category | |
| Hhsize | Total number of persons in HH | |
| HhHisp | Hispanic status of ref. person | |
| HhRace | Race of reference person | |
| LifeCycle | Family life cycle | |
| Hhmsa | MSA identification code | |
| Rail | Presence/absence of rail | |
| TdayYr | Travel day date (YY) | |
| Wrkcount | No. of workers in HH | |
| Hhcmsa | CMSA identification code | |
| Substrat | Substratum within VARSTRAT | |
| Year | Year | |
| HhcmsaNm | HH_CMSA description | |
| TravelDayMonth | Travel day date (MM) | |
| Segment1tran | Mode code for segment 1 | |
| Segment3tran | Mode code for segment 3 | |
| Segment2tran | Mode code for segment 2 | |
| Segment4tran | Mode code for segment 4 | |
| Triptrans | Mode of transportation code | |
