Nezkoušel jsem, nevím co vše umí, ale vypadá to sympaticky.OpenTraffic is a free, global traffic speed data set linked to OpenStreetMap built with open source software.
Traffic speed data is a critical input to many transportation related applications. Fortunately many users who need speed data also produce the inputs necessary to create annonmyized traffic statistics.
OpenTraffic provides the space and tools to share traffic statistics from connected vehicles and mobile services. We support the development of analysis and routing tools that enable cities, businesses, and individuals to make use of this data.