12-10-2009, 04:49 PM | #1 |
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Pedestrian Safety design?
I keep hearing that the more vertical front of the new designs are for meeting increased pedestrian safety regulations. Can someone explain the reasoning behind this? At first thought, I would rather be hit with an e92 than an F01....
I would rather be ramped up onto the hood and flung over the car than have that 90 degree slab of a nose sever my legs and leave my dead torso to fly straight through the windshield. But seriously, is it meant to spread the force over a wider and flatter area?
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12-11-2009, 12:03 AM | #2 |
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I'm curious too. I never understood this. I feel like the new design is meant to run you over instead of toss you up
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12-11-2009, 12:23 AM | #4 |
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lol there is no such thing as pedestrian safety design at 30+ mph
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12-11-2009, 06:08 AM | #7 |
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I've been trying to sort out what the new standards really are . From what I can figure out, the front has to be flatter so that you knock the pedestrian or bicyclist down so you can run them over and squish them rather than have them fly over the hood into your windshield, causing more damage to your car for insurance companes to pay for. is this right?
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12-11-2009, 10:09 AM | #8 | |
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12-11-2009, 10:48 AM | #9 |
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The current e92 design flings people up 20 feet into the air which is a little bit too high so they need to make it flatter so the pedestrians won't go so high
http://www.liveleak.com/view?i=f4d_1248219900 |
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12-11-2009, 01:29 PM | #10 |
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Besides pedestrian can potentially get lifted high in the air, the massive speed of impact may cause hood to flip over and block driver's view after the impact. This usually happened to design/style with bonnet meets top of kidney grill (e.g. E60, E90/92), where the hood latch was said to be the weakest link. But then, the new X3 (F25) bonnet line may follow the similar design judging from latest spyshot. It's a bit of marketing decision IMHO.
While the design of bonnet line across the hood was nothing new from BMW design history, if there is an option, I'd preferred E39, E46, and E70 X5 hood style where the hood continues on kidney grill. Bonnet line across the hood looked pretty sleek (e.g. F01 7er, F10 5er, E89 Z4, E84 X1, E52 Z8, and E31 8-Series to name a few). e.g. E31 |
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12-12-2009, 03:03 PM | #11 |
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So the reason that the bonnet has that split at the front is to accommodate the fact that on impact the whole lid of the bonnet is raised like an airbag to cushion the damage of the head hitting the bonnet and then then engine or bottom of the windscreen.
It is now a legal requirement for all newly designed cars made in Europe to follow this safety legislation. |
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12-13-2009, 02:33 PM | #12 | |
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12-14-2009, 12:51 AM | #13 |
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IMHO... pedestrians can suck it... they gotta watch out for drivers not the other way around...
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12-14-2009, 01:53 PM | #14 | |
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12-28-2009, 05:34 AM | #15 |
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The flatter front bumper of the car means that when the bumper hits the pedestrian's leg, the contact area is bigger and the force is spread out. The force per contact area (e.g. lbs/in) exerted on the leg is reduced and so are injuries. At really high speeds, it won't matter but at lower speeds it'll help.
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12-28-2009, 09:40 AM | #17 | ||
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young fukwits racing at illegal speeds in expensive cars at night. these people should be castrated so that they no longer have a need to measure up against each other on public streets. As for the topic, may be this will help you. In a nutshell, they found out that this knee-bend accidents cause many fatal injuries and want to change that by making changes to front of the car (thicker bumpers, deformable headlights, higher bonnet line). They also propose going forward to almost do away with such a thing as bonnet and just allow drivers access to replace fluid areas. If there is no bonnet, there is possibility to package things more closely and away from car's bonnet, and thus create more padding and make front of safer materials for pedestrians. They still debate on it but the framework is there and manufacturers alone are starting to tackle the issue as it's a major cause of death in road accidents (head on hit). Quote:
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12-28-2009, 10:10 AM | #18 |
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probably wrong sense of humor, but the whole points thing was pretty funny to me. 16.6 points for hitting the pedestrian's head.
back on topic, well i guess things like this works great for places like NY where people just cross whenever they want to, and not look at cars |
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01-09-2010, 05:41 PM | #19 |
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as far as i know, bmw's are built to protect the people inside, not anyone else.... they are poor when it comes to pedestrian safety in quite a number of vehicles, but it doesnt bother me.... lol
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01-20-2010, 11:31 PM | #20 |
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01-21-2010, 12:35 PM | #21 |
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I guess that's part of the reason why the new 7 looks funny up front.
That 8 series is hot, by the way!
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01-21-2010, 12:37 PM | #22 |
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From what I understand, the majority of car vs. pedestrian accidents occur in the city at less than 30 mph, most resulting in death from a head injury.
The current design results in the car pivoting the person at a high rate of speed, with the head slamming into the hood of the car first. This design, along with a larger gap between the hood/engine, will reduce the amount of head injuries hopefully. |
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