Watch: Trooper uninjured after truck slams into car during traffic stop

An Iowa State trooper and a car driver escaped serious injury after a truck slammed into them during a traffic stop. 

The trooper had originally pulled over the car on Highway 218 in Coralville, Iowa, on Tuesday. 

Dashcam video showed the moment a speeding truck striking the stopped car just as the officer was leaning over and talking to the stopped driver. 

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The Iowa State Patrol called it "a very avoidable crash."

This story was reported from Los Angeles.