Transfers are issued free upon request at the time the fare is paid for bus or streetcar service. They are valid for 90 minutes to two hours for two boardings in any direction.
Transfers are available when using a token, except on cable cars.
Acceptable documents are a birth certificate, driver's license, or State of California Identification Card. The document must show the person's date of birth. A Regional Transit Discount Card , allowing persons to be eligible for Muni's discount fare, is available for disabled persons with a doctor's certificate, for qualified veterans, and for holders of a valid Medicare card or California Department of Motor Vehicles Placard Identification Card. A red dot in the center of the discount card allows an attendant to ride for the discount fare. Riders paying a cash fare on the surface portion of Metro lines must board at the front door of the first car of a train, pay their fare, and get a transfer for proof of payment.