Scottsdale made a deal with the Maricopa County Sheriff’s Office and the Arizona Department of Public Safety in January to ignore their own speed violations snapped by the city’s pilot Loop 101 photo enforcement system. The arrangement meant sheriff’s office and DPS vehicles exceeding the posted 65 mph speed limit on Loop 101 received a free pass, even though in some cases police officials admitted the speeding might not have been justified. Some of the speeds recorded were significant, up to 117 mph. Since the high-profile camera system was turned on Jan. 22, city records show that 16 emergency vehicles...