A Score Built From Two Kinds of DangerThe firm’s methodology treats road rage as a problem with two intertwined roots. Houston’s sprawling geography also produced a Commute Dissatisfaction Score of 76, a combination the study describes as intensifying frustration and pushing more incidents toward violence. Nashville followed in fourth at 56.25, with a Reckless Driving Score of 63 layered on top of a Commute Dissatisfaction Score of 70. Miami rounded out the top five at 56.15, with an especially high Commute Dissatisfaction Score of 81 paired with a Reckless Driving Score of 43. Lincoln, Nebraska, posted the lowest Total Road Rage Score of any city studied, at just 1.50, with Sioux Falls, South Dakota, close behind at 5.00.