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Hard-braking events as indicators of road segment crash risk

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Re: Hard-braking events as indicators of road segment crash risk

#511

Earlier quoted context omitted.

>It can be psychologically frustrating True, though- I like being a traffic hacker--come on in, plenty of room!

Weaving into the little spaces is my version of traffic hacking. I estimate every time I can do that, I shave 1-2 seconds off of my commute.

i'm upvoting you assuming you were being sarcastic. if not, i hope you die in a fire of your own making. (also sarcastic)

Re: Hard-braking events as indicators of road segment crash risk

#512
post #457

Earlier quoted context omitted.

Why jump to cities? Low speed traffic in cities is not the main location of car collisions. The main issue is highways and rural roads.

“Highways” and “city” aren't incompatible, quite the opposite: most of the traffic on highways is commuting, in urban areas.

.... in the USA.

I live in the UK where highways majority used for inter city transport.

Re: Hard-braking events as indicators of road segment crash risk

#513

Earlier quoted context omitted.

I don't think you're understanding. The point is that 20 people in a row will take advantage of your buffer to slow you down again and again and again, which makes you get to your destination later... because they're being selfish to get somewhere faster, and you're not so you get to where you're going slower . We're not talking about where they're changing lanes to take the next exit. We're talking about where your…

You mean 20 people who were trying to merge finally get to merge because someone came past who wasn't a massive asshole?

To be completely clear the conversation is entirely not about zipper merging, but about people who are using safety gaps as opportunities for them to traffic weave attaining a faster than average travel speed at the cost of every one else's average travel speed and safety

Re: Hard-braking events as indicators of road segment crash risk

#515
post #281

Earlier quoted context omitted.

Truckers sometimes have a good reason to do that -- they can't brake or accelerate as quickly as a small vehicle, and thus can end up going very slowly if they stick with the right lane. To a driver going 3 exits down the 205 it's not a big deal, to a truck driver doing the same they may be at the end of a long haul up the I5 and every minute starts to count since it can affect their pay. And if you can avoid hard br…

That's not a good reason, those truckers are just assholes. I'd like to see the authorities enforce the law and fine them heavily. Put them out of business.

Being a bit more nuanced, I dont mind a trucker in the left in a 2 lane section (they're likely trying to avoid bad interactions with merging cars from the right) ... but it does bother me when its 3+ .

Re: Hard-braking events as indicators of road segment crash risk

#516

I'd love to have a danger heat map displayed on a HUD while driving. Say a default green banner that goes red near a hot spot or even animates near a current hazard. Mostly it could use these same stats, but then be strident if anything unpredictable is detected nearby.

As I mentioned in another comment, Waze does this. There's a stretch of the Capital Beltway that, if it was on a race track and compressed, would be called "esses." It's totally fine to navigate at 80 MPH with no drama in any mechanically sound, post-1980 car, but it catches mediocre drivers by surprise. Waze throws up a "history of accidents" message whenever I drive through it.

Re: Hard-braking events as indicators of road segment crash risk

#517

I got one of those dongles from my insurance company that plugged into the ODB2 port and reported my driving habits. I was a bad driver. It would frequently beep at me to let me know that I had braked too hard. I was mystified. "What should I have done differently," I'd think, as I raged at the objective machine that judged me so. The next time my brother came to visit, he called mom. "Oh, and presidentender is a goo…

>I'd follow the drivers in front of me too closely Best trick for managing this is to "drive through" the car in front of you. That is, judge your following distance based not on the car in front of you, but on the car in front of THEM. And you don't have to "drive through" all the way down the road - it only takes one car/one level of abstraction for this approach to yield really great benefits, try it if you don't…

This only works if you can see two vehicles ahead. Too many SUVs and pickup trucks are too high and have terrible visibility around them.

Re: Hard-braking events as indicators of road segment crash risk

#518
post #480

Earlier quoted context omitted.

Nobody is getting screwed. I've been the person making the gap many many times. You just ignore them, it isn't hard - they are way up there and I'm way back here, plenty of space. I just keep on with my business of safely driving. Sure I often wish I could go the speed limit - but in reality I'm going almost as fast as they are so it isn't like a few feet lost costs me anything. Odds are I'll be stopped at a red ligh…

In high traffic you’re definitely being screwed - both by the continuing lack of a proper safety gap, and by not being able to go a normal speed. Which does add up in many of these situations. But I guess we should just all self gaslight to feel better about it?

In heavy traffic nobody is going "normal speed". I'm not going significantly slower than anyone else.

Re: Hard-braking events as indicators of road segment crash risk

#519
post #499

Earlier quoted context omitted.

45 vs. 55 is not modest; that's 5 minutes over only 20 miles. Up around 60 vs. 70 is where it becomes "modest" IMO.

So, 3 stoplights worth of time?

Or 0.1 of billable hours, which for many people here is at least enough to pay for lunch.

Re: Hard-braking events as indicators of road segment crash risk

#520
post #169

This is a great use of this technology. In aggregate, these hard braking events _do_ tell us about road design issues. They also tell us about problematic drivers, in aggregate. I'll never use one of these dongles, though, because I don't want my every move second-guessed. There's nothing _inherently_ dangerous about isolated hard braking or cornering or acceleration events. It all depends on context. Am I braking ha…

> There's nothing _inherently_ dangerous about isolated hard braking or cornering or acceleration events. I have to hope that the actuaries at the insurance company are well aware of that. Tuned correctly, the algorithm should not unfairly penalize you. I am reminded of my mother-in-law. She has very few at fault accidents in her decades of driving. And yet she has been involved in a statistically unlikely number of…

As far as I understand, many not-at-fault accidents DO make one's rates go up. The rationale being "the places she drives are extra dangerous and puts our client at risk, despite driving properly."
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