Within the observed ICEV fleet, 43.2% of trips have at least one speeding event. On average, these trips exhibited a mean maximum speed excess of 11.2 mph and spent 11.75% of their duration above the speed limit. This estimation is conservative because the analysis considers only speeding on highways and arterial roadways. By state, the percentage of ICEV trips speeding is notably higher in the southeast states, including Florida (54.61%), Georgia (56.44%), North Carolina (62.11%), and certain regions of Alabama (48.09%) and Virginia (53.84%) (Fig. 1a). In contrast, northwestern states like Montana (20.45%), Wyoming (26.32%), Idaho (26.33%), North Dakota (26.73%), and South Dakota (21.83%), as well as much of Nevada (29.99%), exhibit relatively lower speeding prevalence, which may be explained by higher posted limits in those states.

They also say a speeding trip includes any trip with a single second going more than the speed limit. Kinda crazy to draw conclusion from that.