Sunday mornings have relatively little traffic, but there is traffic.
When I first started riding most any traffic bothered me, however, as a seasoned cyclist, not so much. My preference is still roads with less traffic.
I have purchased VERY BRIGHT LIGHTS for visibility.
That's my 2 cents.
Am I a coward or is it a bad idea to ride much of this journey on open roads posted at approx. 55mph? Actually, rt. 322, rt. 534, and rt. 87 are roads that I avoid for extended mileage.