The article brings all of this up, as well as the prevalence of "sleeper" cabs in US but not EU. This all seems pretty obviously likely to contribute.
One non obvious thing in article; apparently up until 1986 both US and Europe had a strict limit on length of trailer + truck, which is a clear incentive to shorter cabs (gets you more trailer). In 86 US relaxed this, correlates pretty well with the fall off on cab-over designs.
One non obvious thing in article; apparently up until 1986 both US and Europe had a strict limit on length of trailer + truck, which is a clear incentive to shorter cabs (gets you more trailer). In 86 US relaxed this, correlates pretty well with the fall off on cab-over designs.