Here's the full description of the incident from the report: 
 
 A Google Lexus-model autonomous vehicle ("Google AV") was traveling in autonomous mode eastbound on El Camino Real in Mountain View in the far right-hand lane approaching the Castro St. intersection. A public transit bus was approaching from behind. The Google AV test driver saw the bus approaching in the left side mirror but believed the bus would stop or slow to allow the Google AV to continue. The Google AV was operating in autonomous mode and traveling at less than 2 mph, and the bus was travelling at about 15 mph at the time of contact. But three seconds later, as the Google car in autonomous mode re-entered the center of the lane, it struck the side of the bus, causing damage to the left front fender, front wheel and a driver side sensor. (Reuters) - Alphabet Inc’s (GOOGL.O) Google said on Monday it bears “some responsibility” after one of its self-driving cars struck a municipal bus in a minor crash earlier this month. That said, our test driver believed the bus was going to slow or stop to allow us to merge into the traffic, and that there would be sufficient space to do that.” 
 
 The Santa Clara Valley Transportation Authority will investigate the circumstances of the accident, Stacey Hendler Ross, spokeswoman for the Santa Clara Valley Transportation Authority, said on Monday. John M. Simpson, privacy project director for advocacy group Consumer Watchdog, said the crash “is more proof that robot car technology is not ready for auto pilot.” 
 
 A spokesman for the California Department of Motor Vehicles said on Monday it will speak to Google to gather additional information, but added “the DMV is not responsible for determining fault.” 
 
 SOFTWARE REFINED 
 
 Google said it has reviewed this incident “and thousands of variations on it in our simulator in detail and made refinements to our software. From now on, our cars will more deeply understand that buses (and other large vehicles) are less likely to yield to us than other types of vehicles, and we hope to handle situations like this more gracefully in the future.” 
 
 There has been no official determination of fault in the crash. In a Feb. 23 report filed with California regulators, Google said the crash took place in Mountain View on Feb. 14 when a self-driving Lexus RX450h sought to get around some sandbags in a wide lane.
– After six years and millions of miles of driving, one of Google's self-driving cars has become a self-crashing car. The company has admitted that a self-driving Lexus SUV bears some responsibility for a Feb. 14 crash in Mountain View, Calif., the Verge reports. But no people—or robots—were seriously harmed: According to the DMV's accident report, the vehicle encountered sandbags placed around a storm drain when it approached an intersection. When it moved one lane over, it hit the side of a bus that it had incorrectly assumed would yield. The car was only traveling around 2mph at the time of the collision, which damaged its left front fender, the left front wheel, and a sensor. The 15 bus passengers were transferred to another vehicle. 'We clearly bear some responsibility, because if our car hadn't moved, there wouldn't have been a collision," Google said in a statement. "That said, our test driver believed the bus was going to slow or stop to allow us to merge into the traffic, and that there would be sufficient space to do that." There have been other crashes involving Google cars, but this is the first time the company hasn't blamed them on human drivers, Reuters reports. The company says it has learned from the experience and adjusted its software so that its vehicles fully understand that buses are "less likely to yield to us than other types of vehicles, and we hope to handle situations like this more gracefully in the future."