(KMOV) - Trucks may soon be banned from the left lane of some highways in Missouri.

One of the bills passed on the last day of Missouri’s legislative session would make it illegal for big rigs to drive in the left lane on highways with three or more lanes.

St. Louis sits at a major crossroads for trucks traveling across the country.

News 4 investigates found that many of those tractor-trailers passing through are too dangerous to be on the road.

Russell Kinsaul shows you the dangers you can't see and how to protect your family.