Troopers with the Arizona Department of Public Safety (AZDPS) investigated 255 fatal collisions during calendar year 2016 (January 1, 2016 through December 31, 2016). These fatal collisions resulted in 313 fatalities, a 6.5 percent increase over calendar year 2015. Of the 255 fatal collisions, 103 occurred in the Northern Patrol Bureau, 80 in the Metro Patrol Bureau and 72 in the Southern Patrol Bureau.
The primary behavioral contributing factors most frequently documented by troopers for the fatal collisions were; speed too fast for conditions —37 percent, followed by; failure to keep vehicle in proper lane — 11 percent, and finally, drove/rode in opposing traffic lane —9 percent. There are several other factors documented in lesser amounts listed as behavioral factors for the collisions. The fatal collisions in 2016 occurred most often on Monday between 5 a.m. and 1 p.m., Thursday between 1 p.m. and 9 p.m., Friday between 9 p.m. and 5 a.m. and Saturday between 1 p.m. and 9 p.m.; followed by Monday and Saturday between 9 p.m. and 5 a.m.
Thirty-nine percent of the fatal collisions in 2016 involved a fatal injury due to no restraint device utilized in a vehicle. Of the 255 fatal collisions, 13 percent involved a motorcycle, 11 percent involved a pedestrian and 0.4 percent involved a bicyclist. There were 36,113 collisions reported by troopers to the AZDPS in the aforementioned time period. Of those, 186 drivers, 97 passengers, 29 pedestrians, and 1 bicyclist sustained fatal injuries. Of the 255 fatal collisions that occurred during this reporting period, 39 involved a commercial vehicle and, in those instances, 17 were responsible for the fatal collision.