If Model A owners today would obtain true statistical information on car travel and highway road conditions in the 1920's and 1930's, as opposed to reading repeated, false Model A Forum highway condition assumptions, the facts would appear shocking to most.
One would find that large fuel powered earth moving equipment to knock down hills and fill valleys in hill country were so rare; hence, very steep roads occurred often in hills where one could very seldom see oncoming traffic on the other side of hills; curves were also extremely sharp and meant to be traveled on very slowly.
One would find that horse and mule drawn wagons traveling at about 3 mph were plentiful and could be found everywhere ..... unmarked railroad crossings at 60 mph could send heads through the chicken wired Model A tops.
One would find that the so very few dirt roads were full of deep ruts, gravel roads were even fewer, and short paved roads outside of cities were most difficult to find.
One would find that with distinct vehicle parking lights, people often times just stopped and parked at night in the middle of a travel lane to visit or go to a dance or wedding reception.
One would find that tire flats with tube tires were plentiful where cars were often parked in a travel lane to fix a flat tire because they could not afford a spare tire.
In my opinion, from what I heard from my Dad, (born in 1902), and other seniors who traveled back then, tons of volumes of documented facts could be written on why so very, very few Model A's in 1930, (and, in so few areas of the U.S.), were ever driven: "60 mph all day long."
