Arizona troopers have responded to more than 840 calls for wrong-way drivers so far this year.
The Arizona Department of Public Safety announced the statistics Thursday, saying more than a dozen of those drivers were involved in serious or fatal collisions. Another 51 were arrested for suspected impairment.
In the last two weeks alone, two state troopers have been injured trying to stop wrong-way drivers.
The Department of Public Safety said not every call leads to troopers finding a wrong-way driver but they always respond quickly and treat each call seriously.