
1) A scouting or retreating light always has the right of way. If he is running towards you stop shooting if you need to and don't block his way out.
2) The assault mech has the right of way so get out of his way unless you are in situation (1). His job is to bring the pain at a distance or up close; support him and don't step in front of him if he is laying down suppressing fire. If you do step in front of him don't complain if you get hit.
3) Heavies and mediums have the flanking right of way. Snipers and assaults, check your fire when they hit from the sides or cross over when they are in enemy terrain.