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Study: carpooling apps could reduce traffic 3x in NYC

csail.mit.edu

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Re: Study: carpooling apps could reduce traffic 3x in NYC

#121

Pet peeve: how do you "reduce traffic by 3x"? Shouldn't this be "reduce traffic by 66%"

Yes, this annoyed me. Additionally, its not "traffic" that was reduced, it was the total size of the taxi fleet. While this would have a positive effect on overall "traffic" we can't tell what that might be from the article.

Re: Study: carpooling apps could reduce traffic 3x in NYC

#122
post #58

I find the focus on congestion within the transport space to be perplexing. I'm guessing it is to do with the visibility of congestion. Waze recently did a survey and identified the Netherlands as the best place to drive ( https://www.waze.com/driverindex ). The Netherlands is also the only western country with a negative obesity trend expected to hit 8% by 2030, currently at 10% vs the UK's 25%. The USA I believe is…

I love the cycling idea, but for big chunks of the US it couldn't work. I live in Austin and ride my bicycle to work whenever I can, however my office has showers. Without showers here, I'd never do it (and would hope that nobody else would either). Frankly though, the obesity problem is almost entirely about diet. More exercise would be great, but wouldn't address the actual problem.

I personally find the focus on diet to be unproductive. When I'm exercising well (meaning not too much, but e.g. enough to peg my Apple Watch), I simply tend to eat healthier. When I'm not, I tend to eat less healthy.

It's not just about habit ... my taste fluctuates with how healthy I have permitted myself to be (movement, breathing and strenuous exercise). For example, salad tastes better / cookies don't taste as good.

Re: Study: carpooling apps could reduce traffic 3x in NYC

#123

New York City includes Brooklyn, Queens, Bronx and Staten Island as well. Misleading title and perhaps incomplete study if footprint of cabs is not included from those remaining boroughs in this study. If you live in Manhattan, then you don't use cabs as much within Manhattan because subways cover Manhattan pretty well and travel times in cabs are hellish comparing to subway commute. You often use cabs when you commu…

You are incorrect. Brooklyn and Queens have subway networks that are each larger than the next largest subway networks in the US. Brooklyn has a slightly better network than Queens, but both are fantastic. Eastern Queens (after the end of the 7 train) indeed is a transit desert, but still has many commuter rail stations.

There's a station central-eastern Brooklyn called "Broadway Junction" that has as many connections as the largest transfer station in DC.

Re: Study: carpooling apps could reduce traffic 3x in NYC

#124
post #58

I find the focus on congestion within the transport space to be perplexing. I'm guessing it is to do with the visibility of congestion. Waze recently did a survey and identified the Netherlands as the best place to drive ( https://www.waze.com/driverindex ). The Netherlands is also the only western country with a negative obesity trend expected to hit 8% by 2030, currently at 10% vs the UK's 25%. The USA I believe is…

IMO, less congestion makes for roads that are less terrifying for bicyclists.

Re: Study: carpooling apps could reduce traffic 3x in NYC

#125
post #114

Earlier quoted context omitted.

On my phone so I can't find the right metastudy but yes, there is an inverse correlation between urban lifestyles and obesity rates but it's a tenuous one. In cities like Atlanta, St. Louis, Montgomery, and San Antonio the difference in obesity rates from rural and suburban areas in the same state is almost nonexistent but Houston, Los Angeles, San Francisco, and New York see much lower rates in obesity. (within city…

Do you know if there's a study that breaks this down by population density instead? My intuition (having lived for 6 years without a car in Atlanta) is that obesity levels aren't going to be significantly different in a sprawling, low-density city like Atlanta, where everyone drives, but in a dense, walkable, and public-transit friendly city like NYC you will see a difference.

Not off the top of my head but there are plenty of such studies. That still wouldn't give a clear picture because Los Angeles is also a low density car centric city but because it's in California, healthy eating is culturally more prevalent and fresh food is easier to come by.

Re: Study: carpooling apps could reduce traffic 3x in NYC

#126

Earlier quoted context omitted.

> Isn't LA known for it's smog?! LA has the second-lowest carbon emissions in the country, after NYC. The problem is that it sits at the foothills of mountains which block the wind and prevent the pollution from blowing away. NYC, on the other hand, has very clean air because it has incredibly low pollution output per capita and the geography favors its quick removal. (In fact, most of the pollution in NYC air actual…

I bet LA and NYC are low carbon only because they don't actually produce any electricity inside their borders.

According to this list, I count at least five in New York City.

https://en.wikipedia.org/wiki/List_of_power_stations_in_New_...

Re: Study: carpooling apps could reduce traffic 3x in NYC

#127
post #58

I find the focus on congestion within the transport space to be perplexing. I'm guessing it is to do with the visibility of congestion. Waze recently did a survey and identified the Netherlands as the best place to drive ( https://www.waze.com/driverindex ). The Netherlands is also the only western country with a negative obesity trend expected to hit 8% by 2030, currently at 10% vs the UK's 25%. The USA I believe is…

I love the cycling idea, but for big chunks of the US it couldn't work. I live in Austin and ride my bicycle to work whenever I can, however my office has showers. Without showers here, I'd never do it (and would hope that nobody else would either). Frankly though, the obesity problem is almost entirely about diet. More exercise would be great, but wouldn't address the actual problem.

Yeah, people tend to overlook the role climate plays in these comparisons. There's an enormous difference in cycling's viability as a primary means of transportation in a place like the Netherlands where average high temperatures rarely exceed 75, as opposed to Texas where a typical summer will have a prolonged period of temps in the 90s and multiple 100+ days.

The average high temperature in Amsterdam's warmest two months is 70F.[0]

Austin's average high temp is warmer than that for every month except December, January and February. In the warmest months, the average highs are 96 and 97. [1]

[0]: http://www.holiday-weather.com/amsterdam/averages/ [1]: https://www.currentresults.com/Weather/Texas/Places/austin-t...

Re: Study: carpooling apps could reduce traffic 3x in NYC

#128
post #120
post #63

Earlier quoted context omitted.

Yup and without protected bike lanes you only get those people 'brave enough' to venture out. To get people on situp and beg bikes (or ebikes) riding in normal clothes, you have to have visible end-to-end safe lanes. Look at London. They removed two traffic lanes, installed wide cycle lanes and now move 5% more people through the space. 70% of traffci through Blackfriars is people cycling, mostly in day to day clothi…

And in a dense urban core in a mild climate that makes perfect sense. Which greater Manhattan is not.

What? NYC is perfect for biking.

Re: Study: carpooling apps could reduce traffic 3x in NYC

#129
post #104

Earlier quoted context omitted.

That 1.2% figure for the number of rent controlled apartments in 2014 equates to 27K apartments. I was responding to the OP's claim was that New York City was "heavily subsidizing" retired people. Lets say that those 27K apartments have two occupants - the reality is probably less. so that is 54K people out of population of 8.1 million. The percentage of people that rent in NYC is ~ 70%(see link below) or 5.6 million…

The retired population in NYC is not 5.6 million. Further, these are older buildings which are not being replaced in part from rent control. So, the 'Gap' is wider than just 27,000 missing apartments. In any case there still is a highly subsidized subset of the overall retired population that is part of the problem.

Nowhere did I say the retired are 5.6 million people. I used 54K people as the number of retired people at 2 people per each of the 27K rent controlled apartments. I also stated 5.6 to be the total number of all renters using 70% of 8.1 million total residents. Using 54K people again as an example mean that .96% of the populating is in rent controlled apartment. In reality that number is probably much lower because we are talking about an aging population.

I have provided actual numbers and data to demonstrate there is not a high subsidy. You have not provided any supporting evidence to the contrary.

This aside it is pretty disturbing that you keep insisting retired people are a "problem." They have as much right to live New York City as anyone else. They have paid into the system longer than anyone, they stuck it out through the tough times - the bad old days when New York City was a crime-ridden and financially insolvent city. They are not freeloaders by any measure.

Re: Study: carpooling apps could reduce traffic 3x in NYC

#130
post #9

Earlier quoted context omitted.

LA has a very underrated transport system. You can get pretty much anywhere, it just might take longer than by car, but only by an hour or two. Biggest hurdle is bus frequency, but even the routes on the hour are reliable and usable.

> but only by an hour or two So if I have a pretty normal set of afternoon errands like, go to the doctor, get groceries, drop groceries off at home and go to my evening meetup, I'm only looking at an extra 4-8 hours of transit time? An extra 15-30 minutes of transit time(per leg) is basically what is actually sustainable for non-drivers to be able to get multiple things done in a day.

In LA you'd save more time and money by taking an Uber and using Instacart
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