Introduction

An important politician from a foreign country will arrive in our base today. But there is fog and nobody is sure if the landing runway is clear for landing. Today we will construct a robot tank that would clear the runway. To do this it must be able to navigate in a fog.

How could the robot navigate in a fog? How could the plane navigate in a fog?

To navigate in a fog the robot needs sensors. We know that there is a black line at the end of the runway and it is enough to use one color sensor to detect this line and then return back to us. In this way we would know that the tank has pushed all the obstacles that are on the runway and it is now cleared for landing.