lol.... good music.
I've found that a valuable 'tell' of many drivers is head movement. Many or most drivers will turn their head to look in the mirror or over their shoulder whtn contemplating changing lanes. Noticing this has been helpful many times. If you're on the left of a big rig, you can see them do it in their mirrors.
Read The Patriot Post -- It's Right. It's Free.
Sometimes the light to see your way forward is provided by the bridge burning behind you.