Which type of fare card is never valid on Regional Rail?

The One Day Convenience Pass is specifically designed for unlimited travel on the bus, trolley, and subway services operated by SEPTA, but it is not valid for travel on Regional Rail. This pass is intended for riders who require flexibility in using the traditional transit modes without needing to pay individual fares for each trip. Regional Rail operates separately from these modes is designed primarily for longer-distance travel, making the One Day Convenience Pass unsuitable for this type of service.

The other types of fare cards, such as the SEPTA Employee Pass, Senior Pass, and Student Fare Card, have provisions that allow them to be utilized on Regional Rail. For instance, the SEPTA Employee Pass grants free rides to employees on all services, including Regional Rail. The Senior Pass allows elderly riders to travel free or at a reduced fare on all SEPTA modes. Similarly, the Student Fare Card offers discounted rates, inclusive of Regional Rail. Therefore, among the choices given, the One Day Convenience Pass stands out as the only fare card not valid for Regional Rail travel.