Always ask for a transfer/fare receipt, even if you are not going to transfer. Transfer/fare receipts are valid for 90 minutes.
sfmuni.com has a text description of the 9-line
9: Alternate service available
- For Owl Service, See Line 90 Owl. For Weekday and Saturday express see 9X.
- For peak-direction service, see 9AX and 9BX schedules.
9: Evening service from McLaren School
For evening service from McLaren School, see the schedule for service to Visitacion Valley.
Buses and F-line: Always ask for a transfer, even if you are not going to transfer to another line.