Have you ever reported any one to the Dot?

I saw a truck pulling a grain trailer parked geting a tire repaired that was very unsafe today and i am thinking about calling the Dot. The driver-owner lost a hub and tires one time and killed one person and hurt several others. The trailer has cracks in its rear frame and no working brakes. I didnt look at the truck. I talked to the tire guys and they will not touch it agin. I dont know this guy but after killing some one i figured he no longer was trucking.

Have you ever reported any one to the Dot?