Video shows police yelling at a driverless Waymo taxi to stop before it runs over a fire hose

• Footage obtained by San Francisco news site Mission Local shows police trying to stop a Waymo driverless taxi. 
• The vehicle was close to running over an active fire hose. 
• Waymo said it works closely with public safety agencies and trains first responders to interact with its vehicles. 

The driverless taxis ferrying passengers throughout San Francisco are a technological marvel — and sometimes a nuisance.