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.
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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.