Several days in a row I drove down Interstate 10 through St. Martin Parish, Louisiana and observed a Louisiana State Trooper in an SUV doing traffic stops on 18 wheelers. When he stopped the vehicles instead of positioning his unit behind the violator as is customary he instead drove off the road into the grass, drove along side of the 18 wheeler and positioned his unit so that his drivers door was even with the rear of the tractor portion of the truck. Anyone know the reason for this unusual positioning of the unit? It seems to me that it would make him more vulnerable if a passenger would come out shooting. The trooper would be exposed. I have seen many times where Louisiana State Troopers position their units behind the car they stop and then turn the front of the car angled about 15 degrees toward the road and turn the wheels all the way to the left. This would allow the engine block and wheels to provide cover should the violator come out shooting. The technique that the weights and standards trooper used above, however, would seem to leave him vulnerable. Any thoughts?