An app that uses crowed source data to show current traffic status. People can install this app in their mobile phone and can mark the location of traffic and road blocks. The data in the data base(In this case Firebase) will be deleted every 15 minutes. User data also can be stored in the Firebase
You have to Add your own Google Map API key in the strings.xml in the res folder and The firebaseurl of you own Firebase database location in the Constants.java class file