7 ms·

Yeah, I fail to see how the car being an SUV is a factor in the article. Would a smaller car have made a difference? It would have needed to be a lot lighter to

by Ballas 7y ago

Yeah, I fail to see how the car being an SUV is a factor in the article. Would a smaller car have made a difference? It would have needed to be a lot lighter to be stopped by the traffic light. (the influence of mass being linear and that of speed being cubic)

ocschwar 7y ago
Cars are more designed to have the front crumple, and that makes the influence much less, because less kinetic energy is conserved in the collision.
- Ballas 7y ago
  I don't think there is much of a difference in the crumple zone for a German SUV and a German sedan. Do you have any sources?
  - ocschwar 7y ago
    Look up "Bradsher Bars." They're designed to make sure in a collision with a car, the SUV frame will catch the car and not overtop it, which would be even worse for the car's occupants. BUt they also mean less crumpling because the bars have to connect directly with the frame.
jakobegger 7y ago
SUVs also tend to have much more powerful engines. If the accident was really caused by an epileptic seizure (as the media speculate), a smaller car with a less powerful engine wouldn't have accelerated as quickly as that Porsche Macan.
- chooseaname 7y ago
  But not all SUVs are Porsches. Plenty of smaller cars accelerate much more quickly than SUVs.
jessaustin 7y ago
Obviously, a different mass would make a difference in a wide variety of situations. SUVs don't drive slower than other automobiles. Also, kinetic energy has velocity squared, not cubed.
nesadi 7y ago
https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=SUV+safety+pedestrians&btnG= https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=SUV+... I've seen numbers showing in pedestrian accidents, SUVs are twice as likely to kill the pedestrian than smaller cars. Nonetheless, I'd rather we just phase cars out of inner cities entirely.
apendleton 7y ago
As others have said elsewhere, it's the height that's particularly important. As I understand it, there are two reasons: taller vehicles are more likely to send pedestrians under the vehicle than over it, and the point of impact is likely to move from the legs (unpleasant but usually survivable) to the trunk (often not).
IfOnlyYouKnew 7y ago
SUVs have higher and steeper fronts that tend to hit directly and relatively high on the body, directly impacting vital organs. With smaller cars the pedestrian often ends up rolling over the front.

by Ballas 7y ago

ocschwar 7y ago

Cars are more designed to have the front crumple, and that makes the influence much less, because less kinetic energy is conserved in the collision.

Ballas 7y ago
I don't think there is much of a difference in the crumple zone for a German SUV and a German sedan. Do you have any sources?
- ocschwar 7y ago
  Look up "Bradsher Bars." They're designed to make sure in a collision with a car, the SUV frame will catch the car and not overtop it, which would be even worse for the car's occupants. BUt they also mean less crumpling because the bars have to connect directly with the frame.

jakobegger 7y ago

SUVs also tend to have much more powerful engines. If the accident was really caused by an epileptic seizure (as the media speculate), a smaller car with a less powerful engine wouldn't have accelerated as quickly as that Porsche Macan.

chooseaname 7y ago
But not all SUVs are Porsches. Plenty of smaller cars accelerate much more quickly than SUVs.

jessaustin 7y ago

Obviously, a different mass would make a difference in a wide variety of situations. SUVs don't drive slower than other automobiles. Also, kinetic energy has velocity squared, not cubed.

nesadi 7y ago

https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=SUV+safety+pedestrians&btnG= https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=SUV+... I've seen numbers showing in pedestrian accidents, SUVs are twice as likely to kill the pedestrian than smaller cars. Nonetheless, I'd rather we just phase cars out of inner cities entirely.

apendleton 7y ago

As others have said elsewhere, it's the height that's particularly important. As I understand it, there are two reasons: taller vehicles are more likely to send pedestrians under the vehicle than over it, and the point of impact is likely to move from the legs (unpleasant but usually survivable) to the trunk (often not).

IfOnlyYouKnew 7y ago

SUVs have higher and steeper fronts that tend to hit directly and relatively high on the body, directly impacting vital organs. With smaller cars the pedestrian often ends up rolling over the front.