|South of State Street is most challenging - City bike map|
Much of this is cultural. In 1983 there were fewer bike lanes, no bike lights or buffers, less bike-specific infrastructure all the way around. There were also fewer cars, less driving, calmer streets generally, more walking and biking to school, and the bloom was not yet fully off the 1970s bike boom. There might have been broader support, actually, for biking then.
|1978 Raleigh Catalogue Cover|
Sheldon Brown's Retro Raleigh Site