SAN FRANCISCO (KGO) -- Starting this weekend, the San Francisco Muni metro subway will shut down at times to test new train cars.
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It will shut down on weekends and close early on weeknights for about a month.
A bus bridge will be available for passengers and the subway will be open during the Outside Lands Festival, which is the second week in August, to accommodate the crowds coming into the city.
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The first new cars arrived in San Francisco in January and have been undergoing months of test runs on street level tracks. They're expected to be quieter, safer, and more reliable than the old cars.
Click here for full details on the testing from Muni.
San Francisco's Muni to close weekends, early on weeknights to test new cars