This example, discussed in the Spring 2003 Technical Newsletter, illustrates the use of EDSMAC4 for simulating barrier collisions. Although there are several approaches, this example illustrates the best approach - in terms of both the mechanics of the collision and the visualization. For more details, download the Technical Session from the Spring 2003 Technical Newsletter. In the sample crash, two vehicles (a 1999 Volkswagen Jetta and a 2002 Chevrolet S-10 Extended Cab Pickup) sideswipe each other on a freeway, sending the Jetta spinning into the median barrier. After rebounding back into the traffic lanes, the Jetta is struck by a third vehicle, a 2001 Ford Expedition. You can download and view a simulation movie file (MedBarCrashSim.mov) of this example in Quicktime format. (Download time for this 5.3 MB movie is about 3-25 minutes depending upon your connection speed.) If you would like to explore this example further, we have made the casefile available so you can work with it in your HVE or HVE-2D software. Simply download the MedianBarrierCrashSimulation.hve casefile, unzip it into your /supportFiles/case folder, and then open the casefile within your HVE or HVE-2D software. (Download time for this 12 MB zipped file is about 10 - 60 minutes depending upon your connection speed.)

250 red agents and 250 blue agents collide in a furious explosion near the center of the battlefield. While blue agents are relatively aggressive, red agents essentially want to fight everything is sight!