| Value | Category |
|---|---|
| 0 | On foot / Bicycle / |
| 1 | Private car / Motor cycle |
| 2 | Taxi |
| 3 | Bus |
| 4 | Metro |
| 5 | Train |
| 6 | Transportation mean organized by work owner |
| 7 | Work bus |
| 8 | Motorcycle |
| 9 | Using an animal |
| 10 | Bicycle |
| 2147483625 | Don't know |
| 2147483634 | Missing |
| 2147483636 | Other |
| 2147483639 | Refused |
| 101 | .M |
| Sysmiss |