Why Moving People is Complicated: Crash Course Engineering #41
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- Опубліковано 6 лип 2024
- Transportation is a big part of our world and engineers play a big role in making it happen. Today we’ll explore how transportation systems are designed and some things transportation engineers have to take into consideration, like signaling, user behavior, and traffic flow. And, of course, we’ll talk about some of the ways that transportation engineers are trying to improve the systems we already have.
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*And then the Civil Engineers of the 1950s said, "Let us build our national transportation network based entirely around metal boxes with 1 full seat and 4 empty ones. Let us try to build every highway for rush-hour traffic (each way) and every parking lot for Black Friday shopping. Surely this will not backfire on us."*
our population drives around in metal boxes, the cowards, the fools!
EngiBear It does make your nation less vulnerable to rail strikes and strategic bombing if you’re worried about late 1940s communists.
@@armorsmith43 wich obviously, wasnt at all a mistake, to worry about comies in the us....
Lmao. I get the reference for rush hour traffic in each line, but i don't get the jokes about the parking. Can someone pls expalin that to me ?
Worth noting that you also need to take into account human perception when designing signalling. The October 1999 Paddington Rail disaster was caused, in part, by obscured signalling which the driver couldn't see properly due to glare.
Many modern high speed trains have in-cab signalling, since beyond a certain speed it becomes difficult for people to react visually to external signals. Thus, having the signal pop up in the cab at designated points allows for much higher speeds, without sacrificing reaction time.
Mystic Mind Analysis Huuuuuuuuuuummmmmmaaaaaaannnnn factors engineeeeeeeeeeeerrrriiiing
Loved this episode!
Traffic is a very Non-Newtonian fluid :D
good one!
Great video!!! I didn't know what were the field of expertise for transportation, know I know =P thanks"
All of a sudden I want to play mini metro
Jason have you played the sequel Mini Motorways??
Great video
This is good stuff! Thank you.
I love watching CC because everytime I do, my brain feels like it's being massaged..
Who knew engineering was so relaxing
Love the chair.
Thank you!
Fascinating, thank you!
Funny thing: no matter to what country you go to, everyone always complains about the public transport!
*But Belgium is the worst though*
Unlikely, being worse off than your neighbours feels worse than having a bad system like your neighbours... Not that Germany has good transport, a sub contractor canceled service because of the flue.
*I seriously doubt any European country could possibly be worse than the United States. Maybe 10% of people here use transit on anything approaching a regular basis, and I suspect that having used transit EVER AT ALL EVEN ONCE IN YOUR LIFE still puts you in the minority. Nearly half of the population doesn't have access because they live in rural areas, but a lot of it is just because automobiles are so disgustingly ingrained in our culture. It doesn't seem to occur to people that they could pay a fare and read on the way to work instead of spending hundreds of hours and thousands of dollars each year being their own personal chauffeur.*
Brains Applied - The Psychology Channel I disagree. Nigeria is the worst in the world
Toronto is!
So wrong ^^
Look at many africans public network transportation... and us is worst, you just got many things to dislike about belgium =D
I know the field is small but would you guys consider doing an episode on mining engineering?
It is a small field, but an incredibly important one (without mines to supply raw materials, our society would be back in the stone age within an decade). It would be particularly interesting to see the engineering challenges in balancing society's need for raw materials with society's need to not cause devastating environmental damage in the process.
Also, as a subset of the mining, would be very interested to see an episode on geothermal (I know, it is debatable whether or not geothermal counts as mining, but if pulling water with dissolved lithium out of the ground and letting the water evaporate away to get the lithium counts as mining, I don't see why pulling water out of the ground and extracting the heat can't be called mining... plus, at least in Nevada, it legally is defined as mining, so there's that...)
Thanks !
Why is it being re-uploaded?
it seems its also complicated to put up a video properly!
Any updates on your Human Geography series? I’m taking AP Human Geo next year and it’ll be great to have an entertaining way to learn the material! (No pressure, obviously)
It's cancelled
Screw sleep this is better
Re-post?
Please make a course on International Law,Ethics and Human Rights
Shahriar Iftekhar they’d probably want to start with intro Law first.
In traffic, rather than trying to engineer around the drivers by changing roads and routes and other infrastructure, I think money would be better spent in the comprehensive (re-)training of drivers. Yes, I get the concept of forced flow, but I've observed traffic jams starting to form long before a road system should hit even critical flow, much less forced flow.
The problem? People not paying attention. They get on the freeways at sub-optimal speeds; they pace each other for kilometers at a time; they don't know how to merge, leaving entire lanes mostly empty as people prematurely move over; they slow down going up hills or around corners; they get cranky because they think you're trying to cut them off.
In the US, at least, we're in desperate need of re-education when it comes to driving etiquette. It'd help if drivers would 1) pay attention and 2) be skilled enough to handle 1500kg of metal, plastic, electronics and fuel moving at 100+ kph. The worst enemy of any driver on the road is another driver, not the infrastructure.
The problem with saying that there are a bunch of idiots on the road is that nobody is the idiot on the road. So many people think that they drive impeccably, and that the fault always lies in others.
Personally, I think it's a crime that people aren't required to understand basic automotive maintenance, emergency repairs, basic mechanical understanding of the characteristics of their vehicles, and experience in defensive and advanced driving courses.
But hurr, you only need to know where the go pedal and stop pedal are, right?
question: is it not possible to create a dynamic system that take in the variables flow and the number of cars in each road (with all those cameras )
and give as a result the fastest way and display the result either on an electric poster in the road or on google maps with those result being updated each certain amount of minutes. that way every one is taking the fastest way always and the traffic gets reduced
(AI is taking over driving any way we might just make it easier and accelerate the process by adding this system)
Farouk Bach what you described is pretty much where the future might take us. But it’s going to be years before such technology is feasible to implement
LOL, do you guys not have phones?
I hope to be more videos even if you make playlist reach +100
Super Markets use Braess' paradox. When the lines at checkout are too long they close a few of the registers. It should work, right?
But there are no 'best' routes in supermarket lines, since they're all the same distance. The only variable is how many people are in each line. So how does his solution work there?
@@ArawnOfAnnwn Totally untrue. One line has the old guy counting out $3.47 all in pennies, one line is waiting for a price check on canned cabbage scraps, one has a checker who hasn't figured out how to use the multiplier, and is ringing each of 24 beers one at a time.... Multi-variate.
@@JimFortune You mean the cashiers themselves then, not the route. That's a different type of bottleneck - comparable to toll gates on roads rather than the roads themselves. The better solution to that, imo, is automatic checkout (although I guess we're not there yet for that in most places).
@@ArawnOfAnnwn Do you really want to work for free for the super market? So they replace skilled workers with unpaid, unskilled, untrained workers (you and me) and reduce the possible points of failure to the one paid employee there. When that employee is busy, all eight self-checks come to a screeching halt. No, that's a case of everybody trying to take the fastest route which really isn't very fast, and jamming it up to the point that there is no movement..
@@ArawnOfAnnwn Distance isn't the concern. How much traffic passes in a given time is the concern.
Si alguien entiende español va a estar suuuuper! Un ingeniero en transporte no deriva de la Ing. Civil o al revés. Y ahora me preguntarán, ¿why not?
El ing en transporte como bien dijeron investiga las afectaciones y ofrece soluciones multidisciplinarias para beneficio de la comunidad. Más sin embargo su prima la Ing Civil es solo eso, su prima. Tienen rasgos en común y ambos pueden dar soluciones pero una directamente a su diseño, usuarios, vehículos, tiempos, reglamentos de movilidad, etc; y el otro primo a los materiales, diseño de la estructura del camino, construcción del camino etc. Conforme a la construcción.
Por eso son primos pero no viene del otro.
Transportation is all about how create the correct stations, vehicles and roads for consumers to use
Don't forget demand schedules, power infrastructures, landscape designs, legal actions, financing, maintenance, operational resources,...
В час пик поговорка: прямо - шесть, кругом - четыре
This lady's mustache is putting mine to shame!
Captions are covering important parts of the video, how come no one -not youtube nor CC- consider this?
Can't imagine how Braess' paradox can still be relevant in a world with traffic-aware navigation systems like Wase.
Because despite the technology being readily available (and free), a lot of people don't use it. I have Waze on my phone and I use it any time I'm going to a neighborhood that I'm not familiar with, but for my daily commute or going places that I already know, I almost never use it. I know quite a lot of people who are the same way. Even the best technology in the universe can't help if people aren't using it.
Dr. Somara has a lovely accent. British/Indian?
Chinese-Native-American
Rich Marceau Southern English broadly speaking. You’re deluded if you think her accent is Indian.
Transportation engineers didn't anticipate me going 90 on the shoulder.
Take THAT, traffic.
It stinks of a reupload
👍
Hello Crash course! Can you upoad a Crash Course Theology? Just sayin :))) have a nice day!
Pea roast?
Imagine if I told you that I wanted to spend tax money to rip out the transportation system and build a new one where transport speeds are slower, fatalities and accidents are much higher, individuals spend more, maintenance costs to the state are higher, its more polluting but its main benefit is everyone gets their own little metal box which they have to buy themselves. Yea that would be the reverse of the Green New Deal. Get to it America!
*Cars are a great example of Tragedy of the Commons. Even ignoring all of the pollution and other nasty side effects, you have a paradox of speed. Ignoring bus lanes or very inconvenient garages, driving a car will always be faster than taking transit because transit vehicles have to make stops. However, many people individually making the decision to drive a car results in traffic, which means everyone takes longer to get where they were going than if they had all just used transit in the first place!*
You engineers should look up how much of a blunder the Cincinnati, Ohio streetcar is
I don't want to sound paranoid, but every other video I watch about city design or traffic engineering talks about taking away highways. Please don't, they are the best thing about American towns and one of the top reasons I hate going to Europe and Latin America.
Welcome to the reality. As you said thats one thing make America great. At same time America consumes to much gas than others countries in the world. Also i love roads toooooo.
First
This girl is fine af
There is another solution to this: - Waze (-_-)
No translating
And unfortunately no watches
Great video and channel? Yes. Should it be given American tax payers dollars? No
Wow, a black female engineer...
Isn’t it sad that I’m surprised by that?
*I had always assumed that she was ethnic Indian from the UK, though to be fair British minorities don't seem to have their own distinguishing oppressed-underclass dialects like here in 'Murica-land, so...*
EngiBear
Yeah, she may be Indian, which would take some of the surprise away. I honestly don’t know so unless she finds herself willing to share then I doubt we ever will.
Race and gender are irrelevant to success these days. Generally speaking. So I wouldn’t care about either for anyone in any setting.