Neighborhood Watch Function!
It would really help if you could build some sort of neighborhood watch function Waze.

So if you can make a group on Waze with other users (limited or unlimited) users would have to accept an invitation, administrators could be assigned.

Then, when Neighborhood Watch Mode is activated all users on the group could see where the other users are driving.

Nice functions that can be added is when Neighborhood mode is active and suspect activity is identified, the user could notify other active users at that time with a press of a button.