Bus Data
A diagram of the MHN is shown below, with data unrelated to buses grayed out.
As a refresher, the primary key🔑 for nodes is NODE, while the primary key🔑 for links is ABB. See Highway Data for more information.
There are 3 bus run feature classes- base, present, and future. The bus runs are defined by their CMAP unique bus run ID (Lowercase mode + 5-digit number, starting at 00000 for base, 50000 for current, and 99000 for future).
The fields in the following table are present for all 3 bus run feature classes.
| # | NAME | TYPE | LENGTH | DOMAIN | NOTE |
|---|---|---|---|---|---|
| 1 | TRANSIT_LINE🔑 | TEXT | 6 | CMAP unique bus run ID | |
| 2 | DESCRIPTION | TEXT | 50 | Description of bus route, for base/current formatted ROUTE_ID LONGNAME: DIRECTION TO TERMINAL | |
| 3 | MODE | TEXT | 1 | BUSMODE | Bus mode code |
| 4 | VEHICLE_TYPE | TEXT | 2 | CTVEH | Bus vehicle type code |
| 5 | HEADWAY | SHORT | POSITIVE | Headway (minutes) - see note below table | |
| 6 | SPEED | SHORT | POSITIVE | Average speed (mph) |
Note: for base/current runs, HEADWAY describes the length of the TOD period that the run falls into. For example, if it's TOD 1 (8 PM - 6 AM), then the headway is 10 hours, or 600 minutes. The actual headway (duration of time between buses) is calculated later. However, for future runs, HEADWAY describes the actual headway during AM/PM peak time periods.