Read the HFP API documentation to understand how these topic filters are used
| Temporal type: | |||
| Transport mode: | |||
| Operator id: | Operator id should be 4 digits long | ||
| Vehicle number: | Vehicle number should be 5 digits long | ||
| Route id: | Route id should contain 4 digits and up to 2 characters | ||
| Direction id: | |||
| Headsign: | |||
| Start time: | Time should be in format hh:MM | ||
| Next stop: | Stop id should be 7 digits long | ||
| Geohash level: | Note: Geohash level 0 shows only the most significant updates on the map |