The absolutely incredible number of jay-walkers, drivers who saw fit to drive on the wrong side of the street, and drivers who chose to cross directly in front of oncoming traffic, makes me wonder about the people who currently yearn for “The Good Old Days”, and those who decry all government regulations:
Absolutely!
I can’t find any stats regarding San Francisco, but in NYC at the turn of the century, the city had to dispose of 1,200 tons of horse manure DAILY! Obviously, not all of it was swept-up and disposed of, and the population of disease-spreading flies became really problematic.
Clearly, nobody was very concerned with automotive exhaust pollution in those days, but the advent of the automobile was widely viewed as an aid to public health because it resulted in much less manure on the streets.