#FreeTransit is having a moment. In just the past week I've heard about a successful one-month free fare pilot in Colorado: https://coloradosun.com/2022/12/01/zero-fare-colorado-air-pollution/
New Haven and Hartford considering making free fares permanent: https://www.masstransitmag.com/technology/fare-collection/news/21288804/ct-free-bus-fare-extended-through-march-31-but-new-haven-hartford-leaders-want-it-permanent
and New York City exploring free buses: https://www.thecity.nyc/transportation/2022/12/8/23499257/fare-free-nyc-buses-mta-boost
@scott Baltimore has had a few free bus lines for more than a decade https://en.wikipedia.org/wiki/Charm_City_Circulator