TrafficChecker is an Android app that parses public available traffic data and represents it as a text list or on a map with icons.
Start the app, choose one or more regions via the "Select regions..." button. Then wait until the traffic news show up or an error occurs ;) You can click a traffic item and it will lead you to the map, to switch back to the text view hit the back button or check the menu.
Sadly I have to admit that my code is poorly documented, but atleast most of the code is not very complex and easy to understand. Feel free to ask question via mail or github. If you want to improve or fix some bugs, feel free to fork and make a pull request via github.
TrafficChecker is license under the GPLv3 and the license can be found in the LICENSE file delivered with this source code.