41–50 of 89 posts
The problem is there's only so much room for automobiles in a city. The more you decrease traffic, the more you'll induce demand to fill those improved traffic flow patterns. The more infrastructure that is built downtown, the more people want to be downtown.
How much would be involved to adapt this to other cities?
https://github.com/dabreegster/abstreet/blob/master/docs/new... Biggest barrier is lack of trip demand data. If you come up with how many people leave from building1 to building2 at time T using some mode of transport, then this can work.
Hopefully I can have the poc going in the next month. A city wide integration with something like AB street would be really cool and was phase 2 for this project. Phase 3 being an optimised citywide traffic control.
Is it possible to create a map with one click for a new city?
I read through https://github.com/dabreegster/abstreet/blob/master/docs/art... but I can't tell if this must be manually followed.
The problem is there's only so much room for automobiles in a city. The more you decrease traffic, the more you'll induce demand to fill those improved traffic flow patterns. The more infrastructure that is built downtown, the more people want to be downtown.
Hi, author here. Previously posted to HN ( https://news.ycombinator.com/item?id=21763636 ). I just released alpha -- check out this cheesy trailer ( https://www.youtube.com/watch?v=LxPD4n_1-LU ). Happy to answer questions! And if you're serious about running this in your city, the importing process has improved greatly since December, so get in touch.
2) How well does it validate? I couldn't find any reference to observed traffic count data anywhere
The problem is there's only so much room for automobiles in a city. The more you decrease traffic, the more you'll induce demand to fill those improved traffic flow patterns. The more infrastructure that is built downtown, the more people want to be downtown.
That's not a reason to not improve infrastructure anymore than "the more chocolate we produce the more people want to buy chocolate" is a reason not to make chocolate. It just shows you're ludicrously underserving demand.
Chocolate is not free at the point of use but roads usually are. Without price signals or other limits people over-consume resulting in a shortage and people paying in time.
Hi, author here. Previously posted to HN ( https://news.ycombinator.com/item?id=21763636 ). I just released alpha -- check out this cheesy trailer ( https://www.youtube.com/watch?v=LxPD4n_1-LU ). Happy to answer questions! And if you're serious about running this in your city, the importing process has improved greatly since December, so get in touch.
1) How is assignment actually done? i.e given a trip from O to D, how does the model decide which mode to take and which roads/routes to take? 2) How well does it validate? I couldn't find any reference to observed traffic count data anywhere
2) I wrote a bit here: https://old.reddit.com/r/urbanplanning/comments/hdylmo/ab_st... In short, validation is hard, and I'd say I'm a bit understaffed.
Hi, author here. Previously posted to HN ( https://news.ycombinator.com/item?id=21763636 ). I just released alpha -- check out this cheesy trailer ( https://www.youtube.com/watch?v=LxPD4n_1-LU ). Happy to answer questions! And if you're serious about running this in your city, the importing process has improved greatly since December, so get in touch.
Does this take into account the CHAZ/CHOP?
Fixing the traffic lights would go a long way towards improving traffic flow in Seattle. How much time do you spend sitting at a red light when there's no cross traffic? How often are you and the 5 cars behind you abruptly stopped to let one cross traffic car through? Lots of traffic lights already have cameras on them. Hook 'em up to an AI and a goal of maximizing throughput.