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The EV was rear-ended by the bicyclist after braking suddenly when another vehicle began to creep into its lane.

An autonomous Chevrolet Bolt was recently involved in a minor accident with a bicyclist in San Francisco, but the prototype car was apparently not at fault.

An incident report spotted by The Drive details the May 25 collision involving an autonomous Bolt operated by Cruise, the startup now owned by General Motors. The EV was traveling northbound on 11th Street in autonomous mode and turning left onto Mission Street in the outer of two left turn lanes.

"During the turn, a vehicle in the inner of the two left turn lanes began to cut in front of the Cruise AV," the report says. "The Cruise AV braked, and a bike that had been closely crossing behind the rear of the Cruise AV ran into the back of the Cruise AV."

None of the occupants of the vehicle were injured, though the bicyclist is said to have scraped his knee and stated an intention to seek medical evaluation.

Vehicles drifting out of their turning lanes represent a common occurrence in any city. At the particular intersection cited in the Bolt accident, there are no broken lines to clearly identify each turning 'lane' through the intersection, leaving the exact paths to be determined by each driver's interpretation.

It is unclear if the autonomous Bolt's computer-controlled reaction may have contributed to the accident, possibly due to a hard stop that caught the bicyclist by surprise, even if the EV was not legally at fault.