Special parameters are useful for many things …
The system_type=0 is ajusted as default (defined if system_type isn't used) and doesn't do anything special, just a normal way.
| Adapted way type | System_type= | Description |
| track monorail_track road maglev_track narrowgauge_track water | 1 | elevated way |
| track | 7 | tram way (same as waytype=tram_track) |
| 255 | unusable way (fence/pedestrian way/etc …) | |
| air | 0 | taxiway |
| 1 | runway | |
| water | 255 | river |