This is because as people move towards dense urban centers they are now sometimes electing to use Uber and Lyft instead of transit. The thing is because parking and driving is so expensive as is living in a dense prolific city, you probably wouldn't have wanted a car anyway.
The findings clearly show Uber and Lyft create traffic. The speed data used in this study confirm this trend, showing that the average speed decreases from 25.6 miles per hour (mph) in 2010 to 22.2 mph in 2016 and that the vehicle hours of delay (VHD) increase by 63% over the same period.
In addition to the 20% of TNC VMT that is out-of-service, 70% of San Francisco TNC drivers live outside the city
It makes sense that Uber and Lyft actually worsen traffic. They bring cars and congestion into the city and create public transit competitors.
I have the one for NYC here also http://www.schallerconsult.com/rideservices/unsustainable.pd...
The question is what is the best response to help the environment? It seems that supporting Uber and Lyft is contrary to sustainable objectives. Is that partially why many cities and countries do not want them to operate in their jurisdiction?
invest in public transit that can transport people in a denser fashion instead of relying on cars. The fundamental limitation of the car is the low amount of passengers / area it can transport.
http://i.imgur.com/G7cAK4Y.gif
>Is that partially why many cities and countries do not want them to operate in their jurisdiction?
Among other things, yes. But arguably the bigger issue is their inability to comply with regulations, in particular their skewed relationship to nominally indepdenent drivers gives them an advantage over companies who have more obligations towards both customers and workers. This isn't unique to Uber but applies to other "sharing economy" companies like Airbnb
In other cities in the US, it's so broken that people with time pressure and money in their lives don't use it (and so don't particularly support it from a policy/voting perspective either). Predictably, it's no longer "normal" and feels less clean and safe (and might actually be so).
1. Crime
2. Forces you to come in contact with people you would not choose to associate with normally
3. Public transportation vehicles are often dirty/unclean
4. Long waits during off peak times, often, which forces you to revolve your schedule around public transportation
5. Commutes are often longer
6. Can't get to your destination often without a long walk, or another vehicle
7. Usually still requires walking in the rain/hail/snow/sleet/wind/sub-zero temps
8. Initial build out and future expansion are very expensive.
https://advances.sciencemag.org/content/5/5/eaau2670
The corresponding author told me it was the basis for an earlier report issued by the SFCTA:
London has good public transport already. Now imagine if we doubled fuel tax / parking charges / etc and spent it on putting on more buses, building more cycle lanes, having express buses go around the A406/M25/etc.
It'd be so, so much better.
Not sure if that's actually what's going on, but if it is, it's a ridiculous conclusion. Let me rephrase: "Japanese cars are making traffic in the USA worse, based on a computer model that simulated the speed of traffic with Japanese vehicles removed."
There is a link in the article to the original paper, here is if you want to investigate more:
https://advances.sciencemag.org/content/5/5/eaau2670
Material and methods chapter might be of interest for you.
Japanese cars are not otherwise distinguishable by their frequent mid-block stop-and-wait actions, for instance, nor for diverting commuters from public transportation.
- They compare increase in congestion and Uber/Lyft activity for short road segments, and show that these two changes correlate
- They compare reality to a model that does not include ride sharing, but does model increased population etc. This (generally well-regarded model) shows lower increases in congestion in a world without ride sharing.
Uber/Lyft may make it unnecessary for some folks to own a car, but a reduction in car ownership does not mean a reduction in car usage.
edit: or now scooters
Although it is more complicated than that, as I often take a shared ride home because Bart shuts down too early on weekends to be useful on the way back.
Additionally the math gets complicated when I have multiple people with me, as often times it's cheaper to uber/lyft somewhere to our destination than it is for all of us to individually pay for a Bart ticket.
People will use the best option they have out of the ones available to them. Transit is usually faster than Uber for trips to downtown or the Mission, but try getting to Miraloma with it.
In addition, every trip by you, has various costs to everyone else, namely the traffic congestion we're talking about here, plus many other things we're not talking about like pollution, publicly-subsidized police/EMT/fire for cleaning up your car wrecks, etc. Transport modes that allow you to take up less space on the roads per person, or that use separate parallel networks, or that don't pollute or involve wrecks, cost everyone less on these particular axes.
- Replacing public transit = unmitigated bad
- Replacing walking, bike = even worse, bikes are unbeatable for health, space efficiency, energy use, noise, and really any other category
- Replacing using own car = close to neutral, maybe slightly positive, especially when it allows people on the margin forgo car ownership entirely
- Non-consumption = likely positive, taking a trip you otherwise wouldn't take is a sign of increased freedom/participation in society and would tend to outweigh environmental concerns in my subjective judgement
And there's an impact from out-of-town weekend drivers that don't know where they're going and take a dumb route because of that unfamiliarity.
Cities should really get this data from the companies to figure this out. That should be a necessity for operation in the city.
When I'm in SF and other major cities, I tend to lean towards cabs more.
I went from exclusively using public transport (previously living in UK/France) to exclusively taking uber/lyft. Thanks humanity my work provides shuttle to do the commute to south bay, I would never be able to do that with the caltrain. Mad respect to those who have to do it.
You can probably tell I'm salty about the state of things here. As a matter of fact I just passed my driving writting exam today because for the first time of my life I feel like I need a car.
Polls have been pretty constant at least https://www.sfmta.com/reports/customer-rating-feeling-safe-a...
Uber/Lyft make the vast majority of their income in areas that are already well-served by taxis. Consequently, they make the problem worse.
Presumably, in the cities not well-served by taxis, they improve the situation. However, they don't generate anywhere near the income.
I'm not advocating speeding by any means, but after driving 500k+ miles in the NYC metro area you can spot the ineptness and/or driving under fear of speed monitoring of these "T"/"L" plated vehicles. All it takes is for one to be driving 45 mph in a 55 zone on a two lane road with an already congested merge ahead, or they travel in the left passing lane at speeds well under the limit preventing other motorists from advancing, or overall poor driving, then it's a chain reaction of braking and delays mounting behind them.
I've always assumed that the monitoring of these drivers adherence to speed limits is the reason why they travel noticeably slower than the average driver in normal traffic. If that's the case it unfortunately causes the average capable driver to become indirectly part of the "transportation network"'s speed monitoring resulting in delays for everybody.
In the relative absence of these "T" and "L" plated vehicles, I've driven in moderate to heavy volumes where the average speeds are in the 60-65+ MPH range. However, when the livery vehicles start to increase within similar volumes of traffic the average speeds seem to drop and the congestion related delays seem to increase.
So if you were to ask me "Do transportation network companies decrease or increase congestion?" My answer would be "yes". Why? Based on my observations, I suspect it's related to the speed monitoring of the "transportation network" company and a tendency of the drivers of these vehicles being inept relative to other non "transportation network" drivers.
I'd rather we penalize normal car owners than penalize Lyft and Uber. I use Uber Pool every day to get to my bus stop, and there's no good alternative.
This was always questionable for a place like SF or any high density city.
Few people take a ride share to get to a bus or a MUNI light rail stop in SF. If you are paying for the Uber/Lyft, why would you pay again for a bus ticket, especially given the inconvenience of then waiting for the bus. You'll just stay in the car to your destination, after all San Francisco isn't that big.
The exception is perhaps people in SF getting to BART to go to a suburb, but that's not a very significant use case.
Edit: removed potty language, and superlatives.
I said few journeys go from ride share to bus/Muni, excluding BART, which goes a much longer distance than bus/Muni and therefore serves different types of journeys.
And journeys originating from within SF probably still account for the majority of ride shares in the city, not journeys from outside SF.