Press space key to move to middle road. Press up arrow key to move to top road. Press down arrow key to move to bottom road. When you hit wall on right if on middle road press space key to go back to the beginning of middle road. If on top road press up arrow key to go back to the beginning of top road. If on bottom row press down arrow key to go back to beginning of bottom road.
I changed and added some things to ScratchXpert_100's original project Unicorn Run! Here is the link to the original: https://scratch.mit.edu/projects/491197465. Hope you like it! :) -PrincessFlower777