https://www.cnet.com/roadshow/news/waymo-self-driving-cars-law-enforcement/

Next, if the Waymo vehicle detects that it's being pulled over by a police vehicle, it'll pull over and stop, then roll down the vehicle's windows and unlock the doors. Waymo says it can dispatch personnel to the car's location or communicate through an in-car intercom system. With the Pacifica Hybrid prototype cars intended to be Level 4 self-driving, meaning there's no human operator behind the wheel, that remote interaction will likely be critical. For the same reason, Waymo notes that registration and insurance info for the vehicles is prominently displayed on each front sun visor.

Other parts of the updated emergency guide advise first responders on how to deal with the Waymo vehicles in the case of a crash or other critical problem. One of the more interesting notes is a simple way to ensure the vehicle won't keep self-driving: because they can't operate in autonomous mode with the doors open, Waymo recommends emergency personnel simply open a door -- even if that means breaking a window first if the doors are locked. In fact, until the vehicle's battery can be disconnected, Waymo says that first responders should always keep at least one of its doors open.