A free app for Android, by US Offroad Gamers.

Welcome to the most exciting and adventurous bus-driving game. In this game, you will get to experience the fun of off-road driving and transporting prisoners to different locations. The game is based on real-life police transport systems. The main goal is to make sure that you transport the prisoners to the desired destination in a safe and efficient manner. This means that you will need to take the bus into different terrains and landscapes. 

In order to safely transport the prisoners, you will need to have great driving and transporting skills. You will also need to make sure that you have the necessary skills to drive the bus in an off-road manner.