Here are a number of examples of agencies incorporating Waze data into their real time traffic sites:
Sandy Spring Georgia
Sandy springs is notifying people in their traffic management center when a crash happens in the visible range of a traffic accident. They are also archiving the video for later use. This is a map that shows their camera locations and their Waze data.
Johns Creek Georgia
Johns Creek is sending emails via GeoEvent when a disabled motorist is reported. Upon receiving the email, the team will send a vehicle out to help the motorist. It’s like a city sponsored AAA if you will.
Power point of their process: https://esri.box.com/s/kndqzg2dfclj8j732mtw9pjx16dv9zco
The state of Georgia
This includes a layer for flight delays and the Esri Traffic Service
Douglas County, Colorado
They also have a nice open data site:
The latest version of our INDOT demo dashboard is available here: http://esridot.maps.arcgis.com/apps/opsdashboard/index.html#/330148753d8a42738a9c19e00c9691bd
Thanks to Tom Brenneman for pulling these together.