We are thrilled to move forward with some very exciting fare changes that are meant to improve customer convenience and incentivize pre-payment, which speeds up service, lowers costs and encourages ridership. Starting September 1, we will increase the time limit for single-ride fares from 90 minutes to two hours; reduce the cost for pre-paid passports and introduce a new Day Pass (no cable car) which will cost just five dollars, and ensure that all discount fares are set at 50 percent of the full adult fare.

https://www.sfmta.com/blog/fare-time-limits-increase-two-hours-and-new-cheaper-all-day-passes-way