Prerequisites

1. Create an API key by following this instruction: https://developers.google.com/maps/documentation/android-sdk/get-api-key

2. Enable Travel Impact Model API via: https://console.cloud.google.com/apis/library/travelimpactmodel.googleapis.com

3. Restrict API keys to the following APIs:

   Directions API, Maps SDK for Android, Maps SDK for iOS, Places API, Travel Impact Model API.

4. Clone this project using Android Studio and open local.properties file. Then append this line of code at the end:

   MAPS_API_KEY={YOUR_API_KEY}
   

   where {YOUR_API_KEY} is your generated API key.