After NBC 5 Investigates exposed the extreme dangers drivers and pedestrians face on Loop 12 in southern Dallas, police launched a major crackdown on speeding. Now, months into that effort ...

GRAND PRAIRIE, Texas — All northbound lanes of Loop 12 were closed at Interstate 30 Tuesday morning after an unoccupied police car was hit in a crash, officials said.

Police say the investigation determined the passenger in the car, 47-year-old James Grant, got into an argument with the driver as they drove south ... LOOP 12 IS THE DEADLIEST ROADWAY IN DALLAS ...