| Field Name | Description |
|---|
| Houseid | Household identification number | |
| Travday | Travel day - day of week | |
| Proxy | Proxy respondent for person data | |
| RAge | Age of sample person | |
| RSex | Sex of sample person | |
| CensusDivision | Census division | |
| CensusRegion | Census region | |
| RefEduc | Education of HH reference person | |
| Intrvmon | Person interview date - month | |
| Intrvyr | Person interview date - year | |
| Worker | Respondent is a worker | |
| Awayhome | Reason started day away from home | |
| Chain | Trip chain number for this person | |
| Chaintrp | Number of trip within chain | |
| Dateflg | Intrv date imputed as trav day plus 1 | |
| Daynight | Trip started AM or PM G17A | |
| Diffdate | Days between travel & interview dates | |
| Driver | Person is a driver D9 | |
| Editmile | 1= trip miles were edited | |
| Editmode | 1= transportation mode was edited | |
| EditMin | 1= trip duration was edited | |
| Frsthm | 1=persons 1st trip began at home | |
| Hhmemdrv | 1= household member drove G37 | |
| Hhsize | Total number of persons in HH | |
| Vehid | HH vehicle number | |
| Hhvehcnt | No. of vehicles in household (derived) | |
| HhOntrp | Number of HH members on the trip (derived) | |
| Howfaru | Units of reported distance: B-Blocks, M-Miles | |
| Dweltime | Time spent at destination of prev trip | |
| Msasize | Size of MSA of household | |
| Nonhhacc | 1= non-HH members on trip | |
| Nonhhcnt | Number of non-HH members on trip | |
| Editnonh | 1= variable NONHHCNT was edited | |
| Numontrp | Total number of persons on trip (derived) | |
| Passpurp | Trip purpose for passenger | |
| Prevrep | This trip also reported by other HH mem | |
| Tripnum | Travel day trip number for sample person | |
| Pubtrans | Used public transit (8| | |
| Segmentd | 1= if trip is segmented | |
| Sitmost | Sit or stand most on trip | |
| Standsit | 1=sat, 2=stood, 3=both on trip | |
| ToB | Where trip chain ended | |
| Travwknd | Travel day on weekend (1=Y, 2=N) | |
| Triphhacc | Other HH mem were also on trip? | |
| Triphhveh | Was HH vehicle used on trip? | |
| TripnumA | Person trip number of first trip in chain | |
| TripnumB | Person trip number of last trip in chain | |
| WaitMin | Time waited for transportation (min) | |
| WhereTo | H=home, W=work, S=other-specify | |
| WhoaccA | Roster number of other HH mem on trip G36 | |
| WhoaccB | Roster number of other HH mem on trip G36 | |
| WhoaccC | Roster number of other HH mem on trip G36 | |
| WhoaccD | Roster number of other HH mem on trip G36 | |
| WhoaccE | Roster number of other HH mem on trip G36 | |
| WhoaccF | Roster number of other HH mem on trip G36 | |
| WhoaccG | Roster number of other HH mem on trip G36 | |
| WhoaccH | Roster number of other HH mem on trip G36 | |
| WhoaccI | Roster number of other HH mem on trip G36 | |
| WhoaccJ | Roster number of other HH mem on trip G36 | |
| Whodrove | ID of HH mem who drove on trip G38 | |
| Whyfrom | 1995 purpose - from | |
| Whyto | 1995 purpose - to | |
| Whytrp90 | Purpose of trip (1990 definition) | |
| Overlap | =1 if trip part of travel period trip | |
| Hhtripid | Trip number for household travel day | |
| Personid | Person ID number | |
| Strttime | Start time of trip | |
| Transfer | =01 if changed mode from/to pub trans | |
| Tripmiles | Distance (miles) | |
| Triptrans | Mode of transportation code | |
| 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 | |
| HhHisp | Hispanic status of ref. person | |
| HhRace | Race of reference person | |
| LifeCycle | Family life cycle | |
| Hhmsa | MSA identification code | |
| MstrMon | Date of master interview - month | |
| MstrYr | Date of master interview - year | |
| Rail | Presence/absence of rail | |
| RefAge | Age of reference person (yr) | |
| RefSex | Sex of ref person | |
| TravelDayMonth | Travel day date (MM) | |
| TravelDayYear | Travel day date (YY) | |
| Wrkcount | No. of workers in HH | |
| Hhcmsa | CMSA identification code | |
| VtrFlg | 1=POV trip, respondent drove | |
| Substrat | Substratum within VARSTRAT | |
| Hbppopdn | Population density, block group | |
| Hbhur | Urban/rural code, block group | |
| Hbhresdn | HU density (units/square mile), BG | |
| Hbhinmed | Median household income, BG | |
| Strttim2 | --Field Description Not Known | |
| Daynght2 | --Field Description Not Known | |
| Tripnum2 | --Field Description Not Known | |
| Dwelsec2 | --Field Description Not Known | |
| Dweltim2 | --Field Description Not Known | |
