| Value | Category |
|---|---|
| 1 | It was by choice |
| 2 | Public transport too expensive |
| 3 | Public transport not available |
| 4 | No public transport available at specific times |
| 5 | Public transport is not enough |
| 6 | No transport |
| 14 | Its cheaper/Reasonable |
| 15 | It is faster |
| 16 | Other |
| 88 | Not applicable |
| 99 | Unspecified |