

The construction industry is one of the most heavily automated and mechanized industries in existence. We just don’t think about things like “back hoe”, “crane”, “nail gun” or “concrete plant” as forms of automation because they have been around for so long, but they have all replaced more manual aspects of construction processes.





That gradual reduction in speed is typical for roads passing through rural towns in the US. There is often a 25mph for the town center too (or at least the most dense portion of the road as it passes through the town). These are typically rural roads, not the main highways/interstates that do this. They are usually low traffic roads where building a bypass would not be economical.
Motorists don’t like them because they have to slow down for a few minutes. Which is the greatest evil imaginable. The only reason for a lower speed limit is to scam the motorist. The ~8000 pedestrians and bicyclists that are killed each year on the roads is a small price to pay for being able to go fast through someone’s neighborhood.