Waymo has officially published guidelines cops and first responders can follow in case an autonomous car is involved in an accident. Without a human driver controlling the wheel, after all, there's nobody to ask license or information from. More importantly, authorities need to know how to safely pry open or deactivate self-driving vehicles if their passengers are unconscious and need help. The Alphabet-owned company submitted the guidelines to the California DMV back in May, and now you can read (PDF) the whole thing online. Waymo opened its instructions with a toll-free, 24-hour hotline number.