The FMSCA says that Hours of Service violations have fallen dramatically while other commercial vehicle violations have risen slightly.
Experts say that the decrease in violations is likely because of both increased enforcement and advances in carrier compliance programs.
From 2011 to 2014, the number of violations for driving more than 11 hours has dropped 35% while the number of violations for driving for more than 14 hours fell 33%.
General log violations also dropped almost 19%, though false log violations are up 4.4% since 2013. Driver violations were up 6.2%.
The FMCSA data also revealed that more roadside inspections are taking place. They are up 4% in 2014, with 2,986,612 inspections being performed that year.