| Value |
Category |
| 00 |
NIU (not in universe) |
| 10 |
None, does not travel to work or school |
| 20 |
Walking |
| 21 |
Walks or bicycle |
| 22 |
Walks, bicycle, or motorcycle |
| 30 |
Private vehicle |
| 31 |
Auto, truck, van |
| 32 |
Auto (driver) |
| 33 |
Auto (passenger) |
| 34 |
Auto, motorcycle, moped |
| 35 |
Motorcycle, moped, or scooter |
| 36 |
Bicycle |
| 37 |
Bicycle or motorcycle/moped |
| 38 |
Boat |
| 40 |
Public transportation |
| 41 |
Bus or trolley bus |
| 42 |
Bus or streetcar |
| 43 |
Streetcar or trolley car |
| 44 |
Railroad or train |
| 45 |
Subway or elevated train |
| 46 |
Other public transportation |
| 50 |
Other |
| 51 |
Taxicab |
| 52 |
Ferryboat |
| 53 |
Special transportation (company coach, school bus, etc.) |
| 54 |
Hired transport |
| 55 |
Shared private transport |
| 56 |
Horse or animal-drawn vehicle |
| 57 |
Other, not elsewhere classified |
| 60 |
Combination of several means |
| 99 |
Unknown/missing |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.