If you feel unsafe riding on a road...don't ride on that road...
I don't care how many laws there are regarding motor vehicles and bicycles...if you get his by a car it may be the last thing you ever experience...certainly will be something you remember forever if you survive...
Today's drivers are more distracted than ever and I don't trust a single one of them to drive as the law requires.
I ride 30-50 miles daily and am fortunate to live in an area of wide shoulders and a small population but there are some roads I avoid...city's main streets especially...they just aren't safe...even bike lanes are iffy...
No answers unfortunately...