After one of Google’s driverless cars recently ran into a bus, the director of the project has highlighted a separate incident involving a cyclist riding on the wrong side of the road as an example of how its technology has in other cases been superior to a human driver.

Inverse reports that a self-driving Google Lexus collided with a bus on February 14. The Google car was stopped in the right lane where it was being held up by sandbags surrounding a storm drain. The bus was in the middle lane when the Google car pulled out.

It seems the bus driver thought the Lexus would stay put, while Google’s driverless car thought the bus would slow down and let it out. The member of staff behind the wheel in the autonomous car also felt the bus driver would give way and didn’t intervene.

Reviewing the incident, Google said: “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.”

Last June, Google reported that there had been 11 minor incidents involving its vehicles since May 2010, none of which were blamed on the autonomous car. Typically, they were hit from behind in slow speed crashes by human drivers unaccustomed to other road users moving with such caution. To address this, the firm has since said that it is working on making its cars more assertive.

Chris Urmson, director of the project, described the recent bus collision as ‘a tough day’ but said there were other incidents to weigh against it.

One he cited involved a cyclist on the wrong side of the road almost running into a vehicle. There had been another cyclist near the car, as well as other drivers and a pedestrian. The car was able to track each of these meaning it was able to stop in time. “I am convinced I would have hit him,” said Urmson. “I can’t shard my intelligence.”