Proposition L is a proposed extension of the city’s current 0.5% sales tax until 2053 to help fund public transportation projects. The measure also allows the city to issue up to $1.91 billion in bonds to be repaid with proceeds from the tax, which the city controller estimated will generate $100 million per year in its early years, increasing to about $236 million by 2052. Revenue from the tax would be used to fund the 2022 Transportation Expenditure Plan, which includes a variety of programs focused on basic transit maintenance, major transportation improvements, paratransit services, congestion reduction, pedestrian and bike safety, and community-based equity planning.