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Hard-braking events as indicators of road segment crash risk
(research.google)
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this post was submitted on 09 Feb 2026
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Mildly Interesting
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Hard-braking is usually an indicator of bad drivers.
Though I’ve seen some roads that seem like they were designed to cause accidents.
There was one off-ramp in downtown Houston my dad took with me. It was a ramp that led to another elevated highway, so it was pretty far off the ground. But you don’t see until you’re already in it just how sharp the one-lane turn is..
I had never seen him get that close to losing his cool while driving before. He had to half his speed immediately coming off main artery to avoid drifting into the wall. A wall which had multiple tire mark going up it to the top of the wall.
I will always wonder if anyone ever got slingshotted over that wall and off the freeway by that shitty Marble Madness exit ramp.
Similar story: Offramp on a highway I relatively often use, starts with a nice and smooth turn until about 2/3 of the way when it suddenly gets sharper by a lot. Going by the speedlimit indicated by the signs at the start of the offramp is fast enough to lose control.
My headcanon is that during construction the measurements where taken wrong and instead of rebuilding the section to properly fit an offramp, people just continued by building a sharper turn.
I believe it. They redid a sweeping highway interchange overpass here, and several months after they finished, after numerous cars had crashed straight into the bridge wall at the beginning of the sweeping left turn, realized that the point where the bridge meets the ramp was misaligned due to a "miscalculation." This left the road with a flatter 'X' shape, and when you began the 60MPH turn and your front tires unloaded over the misaligned section, you lost traction and skid straight into the side of the bridge. They wound up 'redoing' it but you still have to slow way down when you go over that section.