-To taxi a plane to a runway, click/press the plane if the plane have a green line -To make a plane cross a runway or take-off, click/press the plane if the plane have a red line -To make a plane land, press the arrows !!!DO NOT CLICK MOVING PLANES (if yes, the plane will freeze, and you must press green flag to restart)!!!
I have fixed that the mishap counter falsely sayed that the planes where in contact. I have upgraded the Graphics of the planes