| Orange County Line | OC Line | Metrolink Orange County Line | Metrolink |
| Antelope Valley Line | AV Line | Metrolink Antelope Valley Line | Metrolink |
| San Bernardino Line | SB Line | Metrolink San Bernardino Line | Metrolink |
| 91 Line | 91-PV Line | Metrolink 91-Perris Valley Line | Metrolink |
| Riverside Line | RIV Line | Metrolink Riverside Line | Metrolink |
| Inland Emp.-Orange Co. Line | IE-OC Line | Metrolink Inland Empire-Orange County Line | Metrolink |
| Ventura County Line | VC Line | Metrolink Ventura County Line | Metrolink |