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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

#231

Earlier quoted context omitted.

Letting a large fraction of the freeway cut in front of you will turn normal drivers behind you aggressive, or at least aggressive enough to go around you. There's a balance to be struck.

Oh no! Cars will go around you!

Cars making aggressive maneuvers around you is dangerous for you.

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

#232

Earlier quoted context omitted.

> vehicle changes lanes in front of you; I will never understand why this is so rage-inducing for people. Changing lanes is a necessary part of navigating, even during busy traffic. People on an on-ramp will need to get in front of somebody . People needing to move back to the right because their exist is coming up will need to get in front of somebody . Your lane is not a birth right. Let people merge. > you slow do…

It brings me peace to see other people thinking this way. You should be an active participant on the highway, making decisions to maximize flow. Leaving space so people can merge, controlling speed to smooth slowdowns, anticipating traffic patterns, etc. All of the people tailgating are contributing to the congestion. https://youtu.be/iHzzSao6ypE

[deleted]

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

#233

Earlier quoted context omitted.

I'm one of the faster drivers and I maintain a safe distance. (I usually have the most distance in rush hour.) It's very easy with adaptive cruise control or the other self-driving technologies that are on the market. The only people who cut too close to me are driving recklessly. That being said: If you're in the mode where people are constantly changing lanes in front of you, think a bit about how you're driving: O…

> and you're expected to keep up with the flow of traffic. This is very state dependent, if we are talking about legality. In WA state, for example, there is no "flow of traffic" law or similar. The limit is the limit, and any excess of the speed limit is illegal regardless of what all other drivers are doing. So even if the right/slow lane is going 100MPH through the 70MPH zone, you are legally expected to still go…

> This is very state dependent, if we are talking about legality.

Are you sure? And by that I mean, are you sure there are states that don't work the way WA works?

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

#234

Earlier quoted context omitted.

Maintaining a safe following distance is incredibly challenging on busy freeways where hard braking is often 'required'. Most people have likely found themselves in this situation: vehicle changes lanes in front of you; you slow down to maintain a safe following distance, another car sees a gap and changes lanes in front of you. Repeat for your entire commute. Incredibly frustrating, and I've driven all over North Am…

> North America Having driven all over NA, and Europe, I find it more prevalent in NA. Less distance, more people in large pickups throwing their weight around to make someone move out of the way. And a design of giant freeway interchanges that require shifting lanes. E.g. on the 405 in CA. 7 lines going South from the Valley towards Santa Monica. That's 7 lanes you need to cross if you're in the HOV lane.

> That's 7 lanes you need to cross if you're in the HOV lane.

The 401 is my favourite with eighteen lanes, four for the inner express lanes, and five for the collector lanes.

https://en.wikipedia.org/wiki/Ontario_Highway_401#/media/Fil...

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

#235

Earlier quoted context omitted.

> vehicle changes lanes in front of you; I will never understand why this is so rage-inducing for people. Changing lanes is a necessary part of navigating, even during busy traffic. People on an on-ramp will need to get in front of somebody . People needing to move back to the right because their exist is coming up will need to get in front of somebody . Your lane is not a birth right. Let people merge. > you slow do…

It's frustrating because someone is taking your safety buffer as their opportunity to travel faster. And it results in you having to travel slower and slower to maintain the gap that is constantly consumed, tragedy of the commons style, by opportunists.

Not to mention if that if somebody needs to come over, the proper thing to do is signal first. Then I'm happy to politely ease off a bit and open more space for them to come over safely.

It's the people who aggressively slide right over just a few feet in front of me (cutting off nearly all of my safety buffer) without so much as a signal that really drive me nuts.

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

#236

Earlier quoted context omitted.

Do you have a wood surface nearby? I would recommend giving it a good knock.

Apparently I just live in a place where it's not a common problem. Also I do tend to leave a big gap behind cars in front.

They salt your roads, or put grit?

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

#237

Earlier quoted context omitted.

Society would have a lot fewer car accidents if we, collectively, could get over that "Oh no someone dared to get in front of me! " feeling.

We'd also avoid a lot of accidents if we stopped the people that are doing lane changes for position-jockeying and no other purpose. So it's bad to be mad while driving, but there's a lot of lane changes that deserve the ire. (It's a tiny fraction of drivers that get really bad, but a less tiny fraction of lane changes.)

Being angry at them won't change their behaviour, but will make you more stressed. Remember: driving like that is its own punishment, because they'll be extremely angry and frustrated at everything. Between that and the realisation that driving 2% slower adds about 1 minute more per hour of driving you have to do, I find I can avoid stressing at people lane weaving and have a nicer journey myself.

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

#238

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…

Maintaining a safe following distance is incredibly challenging on busy freeways where hard braking is often 'required'. Most people have likely found themselves in this situation: vehicle changes lanes in front of you; you slow down to maintain a safe following distance, another car sees a gap and changes lanes in front of you. Repeat for your entire commute. Incredibly frustrating, and I've driven all over North Am…

Maintaining a following distance is going to be one of the things that improves dramatically once self driving cars are widespread. Self-driving cars simply don't care that someone cut them off, they'll just happily open up extra space again and again.

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

#239

Aim to make the road laminar. Every time you hard brake, you're causing the milk jug to glug, making a ripple of entropy as momentum turns to heat from your brakes and those behind you, sometimes in perpetuity. I learned this while doing a 1.5hr daily commute in a Subaru with a clapped out manual transmission. I wanted to conserve energy shifting, but realized I was now participating in large choreographed dance of "…

I try to do the same, and do my part to smooth out the wrinkles in traffic.

What I would really like in a car is not only my current speed, but the relative speed to the car ahead of me. Given my car has cameras and other sensors for cruise control and other features this ought to already be possible.

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

#240

Earlier quoted context omitted.

> vehicle changes lanes in front of you; I will never understand why this is so rage-inducing for people. Changing lanes is a necessary part of navigating, even during busy traffic. People on an on-ramp will need to get in front of somebody . People needing to move back to the right because their exist is coming up will need to get in front of somebody . Your lane is not a birth right. Let people merge. > you slow do…

It's frustrating because someone is taking your safety buffer as their opportunity to travel faster. And it results in you having to travel slower and slower to maintain the gap that is constantly consumed, tragedy of the commons style, by opportunists.

It seems like a tragedy, but actually it can be a boon as long as you travel in neither the leftmost nor rightmost lane. The majority of the traffic entering your buffer will be exiting your buffer out the other side as soon as they can, so you can just chug along at a (greatly reduced, but) consistent speed. Meanwhile, the traffic to either side of you is in standstill, paralyzed by your bow wake.
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