Parking Considerations - If possible park you vehicles on one side of the street and at an angle towards the curb. Park back at least 100 feet. If you're going to protect the scene with your vehicle do so in a manner that will provide the desired protection. After reviewing numerous collisions where emergency vehicles have been run into from the rear it has become clear to me that the protection that people think they are providing in front of their emergency vehicle does not exists. Even heavy fire apparatus with the brakes locked and wheels chocked, have been driven up to 100 feet when struck by a vehicle that didn't weigh ONE-THIRD as much! Firefighters, police and EMS personnel have been killed in these collisions. If you stop back 100 feet and angle the vehicle to the right, you are providing the pump operator a safe area and if the vehicle is hit it will go to the right side of the road and not up into the scene. If you have to cross the road to accomplish your mission angle the vehicle to the left. Both of these angle procedures also keep the blinding headlights from making your scene unsafe.