Mercedes pile-up at safety demonstration - Mercedes-Benz Forum

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post #1 of 4 (permalink) Old 11-17-2005, 06:39 PM Thread Starter
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Mercedes pile-up at safety demonstration demonstration&item=669#

In a supposed demonstration of S-class automatic brake radar, it failed horribly and resulted in a 3 car pile-up. Oops.. Glad my w123 doesn't have systems like that to go wrong.. ;>
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post #2 of 4 (permalink) Old 11-17-2005, 06:54 PM
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Okay, serioursly, everyone needs to think about the circumstances

As I said at MBWorld

Radar bounces off thingies to the car in the front, and it bounces back to the S. When you're in an enclosed building that would throw it off.

Think of the S as yourself. Your in an empty building. You say something, it echos back. Can you pinpoint the exact location of where the echo came from?

backed up by MB Fanatic

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Excellent example. Radar is a really high frequency from what I remember of my physics courses, therefore it is bound to bounce off of walls, which in this was were made of metal.

What happened here is that the radar bounced off the car in front of the W221 and was scattered elsewhere, not allowing the W221 to get a proper reading as it was picking up multiple frequenices with varying amplitudes. we called it radio interefence, and car makers test each and every car for such interefence with radar, sonar, and other RF.

Do this same test in a real world application and it will work fine.

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post #3 of 4 (permalink) Old 11-17-2005, 08:17 PM
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RE: Mercedes pile-up at safety demonstration

"Here we have the pinnacle of Mercedes automotive technology, the new S-Class. Many lengths have been taken to ensure a high quality manufacturing process, as quality is much improved over its predecessor. We will now demonstrate a redesigned and newly improved distronic plus cruise control system..."


"......................Uh, cut?"
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post #4 of 4 (permalink) Old 11-18-2005, 09:39 AM
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RE: Mercedes pile-up at safety demonstration

You'd think after 100 years of experience and what not, they'd have tested it before broadcasting haha.

MB sounds like a Hollywood star - with a publicist that has an excuse for everything stupid or dumb that they do.

I'd be terrified of that system - how do I know, for example in a tunnel in my new S that I'd be safe to use that system - or a valley in the mountains....last memory as I fall to my death off of a mountain road is "well, the system does work most of the time, just not now".


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