The photo above shows some of our test equipment on a MCI Motorcoach. The bus was outfitted with two VC-4000 tri-axial accelerometers. The bus's motion was also measured by a Stalker RADAR and high-speed video. This bus was equipped with air disc brakes, an automatic transmission, and a DDC Series 60 engine with DDEC IV ECM. We had several goals when conducting this test, including examining the effects of specific driver inputs on the Last Stop Record. Like the rest of the tests we conducted at Fox Valley, the goal was to replicate real-world post-crash scenarios to see how the Event Data Recorder interpreted what happened.
The photo above shows us creating a Hard Brake record with an International tractor and DDC motor. If you look closely at the left-hand side of the photo, you can see the smoke boiling from the drive axle. This was a really, really fun day!
The results of all of this testing (as much as we can fit, anyway) will be presented at the Midwest Association of Technical Accident Investigator's Annual Conference, during the second week in June.
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