Loads of people within Netherlands use an app called "Flitsmeister" which does this and more. It basically gives you traffic information by determining where yo

Loads of people within Netherlands use an app called "Flitsmeister" which does this and more. It basically gives you traffic information by determining where you're going to. It's different from Waze/Google Maps and so on that primarily it a) can auto start if you're using a bluetooth carkit b) it just looks at where you're currently headed. Not needing to set a navigation is quite handy because often you're headed towards the same places (e.g. work) and do not want to setup your navigation 2x/day. Things it warns about: emergency vehicles (!), open bridges, speed/red light cameras (name is based upon this), (dynamic) speed limits (if on a highway it shows e.g. 70 instead of 130 the app will know), stopped vehicles, bad road, etc. See https://play.google.com/store/apps/details?id=nl.flitsmeister https://play.google.com/store/apps/details?id=nl.flitsmeiste... I'm guessing they had to cooperate with a lot of different government bodies to make all of the functionality possible. Anyway, it works quite well in practice. Also, emergency vehicle notification is automatic, it's not based on people needing to report it!