San Joaquin Regional Transit District (known as "San Joaquin RTD" or simply as RTD) is a transit district that provides bus service to the city of Stockton, California and the surrounding communities of Lodi, Ripon, Thornton, French Camp, Lathrop, Manteca, and Tracy. In 2021, the system had a ridership of 1,587,700, or about 6,700 per weekday as of the second quarter of 2022.