That is a legitimate issue for cyclists. But once about 20 years ago,
while DRIVING in the Salt Lake City area, I veered left into the next
freeway lane to avoid being committed (I thought- based on available
information) to taking an undesired exit. I found myself smack dab in
the midst of ONCOMING freeway traffic. No barriers or other readily
identifiable makers to indicate that I would be moving into a
substantially different traffic pattern. It's not a mistake I would
make twice and I'm sure the locals were fully familiar with the
layout, but I thank serendipity for the lack of direct oncoming ( i.e.
'head on") traffic in the lane I had entered. That was a situation
that could have easily been "game over."
DR