"historic streetcar line" rather than as a "heritage railway." Muni's logo is a stylized, trademarked "worm" version of the word muni. This logo was designed by San Francisco-based graphic designer Walter Landor in the mid-1970s. Announcements To cater to the large Hispanic and Latino American and Asian American populations in San Francisco, bus announcements are in four languages: English, Spanish, Cantonese and Tagalog. Route names Bus and trolleybus lines have number designations, rail lines have letters and the three cable car lines are typically referred to by name only (Powell-Mason, Powell-Hyde and California). Fares Except for cable cars, cash fares are $3.00 for adults; $1.50 for seniors over 65, youth aged 5–18, people with disabilities, and Medicare card holders; and free for low- and moderate-income seniors, youth aged 5–18, people with disabilities residing in San Francisco, and up to three kids under 5 per adult. Clipper card and MuniMobile fares are $2.50 for adults and $1.25 for seniors, youth, and people with disabilities. Proof-of-payment, which fare inspectors may demand at any time, is either a Clipper card, MuniMobile, Muni Passport, or paper transfer. One fare entitles a rider to unlimited vehicle transfers for the next 120 minutes. Cable cars are $8 one way, with no transfers, unless the rider has a Muni Passport or a Muni monthly pass. As of July 2019 monthly passes cost $81 for adults ($98 with BART privileges within city limits), $40 for low-income residents ("Life Line Pass"), or $40 for youth, seniors and the disabled. Passes are valid on all Muni lines—including cable cars—and the $98 adult pass allows BART transit entirely within San Francisco (between Embarcadero and Balboa Park). Other passes and stickers are valid on all Muni lines, including cable cars, but not on BART (with the exception of BART-Plus ticket types). Cable car fare is $8 per trip, with no transfers issued or accepted. "Passports" are folding scratch-off passes that can be purchased by mail, or at various places throughout the city; they are good on all regular-service lines without surcharge, including cable cars. As of September 2018, Passports cost $23 for a 1-day pass, $34 for a 3-day pass, or $45 for a 7-day pass, with discounts for using Clipper card or MuniMobile. Muni has implemented a dual-mode smart card payment system known as Clipper (formerly TransLink). The transponders have been in use since at least 2004, and replaced most paper