Figure 15. Two Car Crash in Two Lanes.
This diagram depicts the proper configuration of people and equipment at the scene of a two-car crash in two lanes.
The diagram depicts a three-lane roadway; arrows indicate that the direction of travel is from left to right. The roadway contains both a left shoulder and a right shoulder. In this image, two vehicles have collided, and the crash is blocking the left lane and the center lane.
In the diagram, beginning on the left, in the advance warning area, warning signs are placed in the left and right shoulders well in advance of the taper. A line of traffic cones begins about one-third of the way through the advance warning area, with the first cone placed where the shoulder meets the off-road area. A flagger is placed at the point where the cones cross the shoulder and enter the left travel lane. The line of cones then runs diagonally down and to the right until it meets the dashed white line that separates the right travel lane and the center travel lane, at which point the cones continue on in a straight line along the dashed white lane dividing line through the end of the activity area. The area from the flagger up to the point where the cones meet the dashed white line is designated as the transition area. At the end of the transition area, the service/safety patrol vehicle is positioned in the center lane, just past where the traffic cones meet the dashed white line. The front of the safety/service vehicle is the end point for the transition area.
The activity area begins with the rear of a police vehicle, which is parked in front and ahead of the safety/service vehicle in the left lane. In front of the police vehicle, parked on the diagonal with the rear of the vehicle in the left shoulder area and the front of the vehicle just inside the line of traffic cones, is a fire rescue vehicle.
A flagger is positioned in front of the fire rescue vehicle, immediately before the incident itself. An EMS vehicle is positioned immediately following the crashed vehicles, and a tow truck is positioned in front of the EMS vehicle.
The end of the activity area is beyond the front of the tow truck.
