Patents for navigation/routing mobile app

I’m developing mobile navigation app based on OpenStreetMaps. It will be quite simple, routing is based on data sent by users for example some crash or stop. Main view will contain maximum speed and name of current street. Do you know any patents that I have to be aware writing navigation/routing app?

Here is an example:
Routing based on detected stops -

While watching the whole “Routing Sector” around the OSM universe for many years now, I *never *came accross any patent that has an influence on the opensource solutions listed at