A Google self-driving car was in an accident with a public bus on Valentine's Day based on a report that showed up last month. The Alphabet company's autonomous vehicle (AV) was mostly at fault when it hit the bus while moving around some sandbags. A new video is the first one to show the minor crash between the robot car and city bus.  

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The Associated Press (AP) has posted the video. Google's driverless car had made the wrong guess that the big vehicle would slow down and allow it to change lanes, according to BGR.

This fender-bender resulted in the driverless car's radar being torn off, a tire flattened, and the side being crushed. Google's Lexus had to be towed according to The Guardian. AP's posted video also shows the bus driver was not at fault.    

The event happened in the city of Mountain View in Silicon Valley where Google is headquartered. Footage shows the auto moving into the path of the public bus rolling at around 15 miles per hour (24 km/hr)

Since the accident the Alphabet company has tweaked the car's algorithm. Google's self-driving cars have now been programmed to expect larger vehicles to be less likely to yield to other automobiles.      

In past accidents Google has blamed human error for various crashes while testing its robotic cars. This was the first time that the tech giant admitted it was partly responsible for a crash.

Google's AVs still have a better safety record than human drivers. This was the first at-fault accident after racking up over one million on public roads, and it resulted in no injuries including the human driver in the Google AV and 16 bus passengers.

Google reports that its cars have been hit about a dozen times in or near Mountain View since it started doing road tests in Spring 2014.

AP received the video and post-crash pictures from the Santa Clara Valley Transportation Authority (VTA). VTA spokesperson Stacey Hendler Ross reported that based on the footage the public bus driver was not responsible for the accident, and the cost of damages had not been determined yet.

Google has also submitted a report to the California Department of Motor Vehicles (DMV). Photos show two small sandbags on either side of a curb-side drain, which caused the car to shift left in the lane.