The woman was hit near the intersection of Ninth and Market streets. She has been transported to a nearby hospital.
The F line is shut down in bothe directions. Market Street is open but drivers cannot turn right onto Market Street from Ninth Street.
The driver of the Muni streetcar has been placed on administrative leave pending a drug and alcohol test.
Two historic streetcars were involved in an accident on Market Street on August 3 in which a car became sandwiched between them.
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