According to NYC-DOT (PDF), the average number of vehicles entering Manhattan's CBD every weekday has dropped slightly from 778,000 in 2010 to 731,000 in 2013 (the latest data available). But even with fewer vehicles, average traffic speed has slowed from 9.35 mph (2010) to 8.51 mph (2014). That may not sound like much, but when almost three-quarters of a million vehicles are trying to move, even small losses in average speed have big effects. (You can see NYC's urban mobility scorecard (PDF)," calculated by Texas A&M's Transportation Institute, and compare it with other Eastern cities.) According to one study (PDF), congestion costs NYC about $16 billion a year in productive time lost during commuting. Also, vehicle emissions are a major source of pollution, as the City is trying to cut 80% of its greenhouse gas by 2050.
What to see lots of data on persons and vehicles entering the CBD over time? Go NYMTC online and select Data & Models, then Hub Bound Travel.
Of course, not all vehicles entering the CBD are personal automobiles. (You can read and talk about the impact of other kinds of vehicles in Topic 2 - e-hail and FHVs and Topic 3 -Trucks, buses, etc. But private vehicles get a lot of attention when it comes to reducing congestion because they're the least efficient way to move people in and out of the City--especially when the car is carrying only 1 person.
The next two subtopics of this post discuss ideas for reducing the number of private vehicles in Manhattan, but maybe it's important first to know more about why people are driving into the City. Using census data, a recent study found that commuters who rely on private cars tend to be either (1) from middle- to high-income households with poor public transit options (e.g., Staten Island; eastern Queens), or (2) from middle-income households with average public transit options. (The same study found that other medium and high household-income commuters tend to use a combination of public transit and taxi or e-hail services like Uber. See Topic 2 - e-hail and FHVs) to discuss these services. Low-income households use public transit where it's available--and are just out of luck where it isn't).
►If you drive to and from Manhattan for work, why do you chose to drive? Have you considered other forms of transportation? What would make you switch?
► When government officials are thinking about solutions to congestion, what factors do you think are most important, e.g. length of travel time, reasons for driving, access to public transportation?

Comments10
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Anita Bartsch
November 23, 2015 - 7:43pm
we don't own a car but on the 1-2 occasions a year that we RENT one there is never a place to park in our neighborhood, yet the locals continually claim these free spaces - there should be a limit on local parking and car use in Manhattan proper, we are in affordable housing so the paying to park over night is a huge expense which could be eliminated by some sort of system that allowed everyone the opportunity to park on the street and drive in town here but not every single day like one is entitled to this, some kind of voucher system, also just too many cars, we live by West Street and the excessive number of vehicles with one driver frequently on a cell phone is insane, mandatory car pooling needs to be put into place here to cut back on this traffic and more enforcement of the phone distraction, it's not about someone else's convenience at the expense of someone else's air quality
Moderator
November 23, 2015 - 10:24pm
Thanks for your comment, Anita. One way to reduce the number of cars in the city is to introduce congestion pricing, which you can read more about in subtopic 2 on this page. Basically, drivers would have to pay a toll—like you would if you crossed a bridge—to drive into central Manhattan. Hopefully, that would give drivers a good reason to use the bus or subway. Another way to reduce congestion: the city could ban private vehicles from entering Man, which you can read about in subtopic 4 on this page. Which would you prefer, considering that you occasionally rent a car? Or do you have a different idea?
P.S. To read more about cutting down on distracted driving and other annoying driving habits, check out topic 3, subtopic 4.
jonbranch99
November 24, 2015 - 12:50pm
The biggest problem i find with traffic in the CBD is parking. Usually individual driving along the streets are looking for a space to park their vechile. Parking is a litmited resource yet it is managed like an unlimited right. Since the price of parking does not shift with demand it incentivizes people to park for as long as possible. If parking spaces were priced more accuratly with demand, indiviudals would park for shorter intervals, allowing more people to use the same space over a given amount of time. Since less people now while be looking for parking while driving, traffic should also decrease as well.
Moderator
November 24, 2015 - 5:46pm
Welcome to the discussion, jonbranch99. It sounds like your time-of-day pricing idea for parking would be part of the solution to NYC congestion. You may want to take a look at sub-topic 2 (the section on congestion pricing immediately below).
One proposal has suggested restricting on-street parking to commercial deliveries. Presumably, other vehicles would have to park in garages. What do you think of this proposal?
jonbranch99
November 24, 2015 - 8:46pm
The site that you hae referred me to makes a number of excellent points. From reading it and other comments on thos site i firmly beleive a hollisitc approach would serve NYC best in fighting congestion. That entails SmartPark refrom,expanding loading zones, expanding the parking tax and abolish the exemptions, complete streets for all arterial roadways and enacting Move NY in its entirety.
exurbrider
November 25, 2015 - 11:55am
There are several neighborhoods in Manhattan where on-street parking is restricted to commercial vehicles only between 7am-7pm: the area between the empire state building and the central library, for example.
Using this as a case study, are the goals set out in the car free plan from restricting parking acheived there?
jamesarrufat
November 25, 2015 - 10:18am
In the rare occurance that I drive into the city, it is usually because depending on the time of day it is the quickest way in, the most convienant. If I drive before 7:30am I can get to E Midtown in 20 minutes ($16 tolls + $25 parking) vs 30-45mins on the Ftrain ($5.25).
Factors that are most important are availablity and access. People drive when it is convienant. If MTA subway and buses were free for NYC residents this would go a long way to incentivizing residents to take mass transit.
Nick
November 25, 2015 - 2:32pm
I own a car but rarely do I ever drive into the Manhattan central business district during peak hours. I live in the Southeast Bronx and definitely prefer to take the subway or bike. Personal automobiles should especially be limited within the CBD due to congestion and public health issues. Areas outside the CBD also need to be taken into consideration and require substantially more traffic calming and alternative uses of public space. This space could be dedicated to other uses such as: physically seperated pedestrian space, bus only lanes and bicycle lanes. Additionally, NYC should increase the number of loading zones within existing parking to reduce double parking, reconfigure streets to increase safety, and increase automated enforcement via cameras. The city needs congestion pricing, toll balancing (both MoveNY), a residential parking permit system, variable tolling, zoning that bans autocentric construction, and needs to remove parking minimums.
Nick
November 25, 2015 - 2:42pm
I should add that I utilize my car for intra-borough trips more than anything. In the Bronx we lack efficient cross-Bronx mass transportation. It can take over an hour via bus to get from neighborhoods like Castle Hill to Morris Heights.
In the Bronx we need more agressive implimentations of SBS in more locations. Physically seperated bus only lanes where feasable, off board payment, elevated platforms for those with limited mobility, traffic light priority, etc.
More protected bicycle lanes would also encourage more New Yorkers to give it a try and realize the benefits of utilization. Most trips in this city are short, and here in the Bronx many arteries have aggressive traffic with little enforcement. Traffic calming would go a long way and is happening but slowly and not aggressively enough.
Public health should be priority. All other modes (buses and bikes) should have priority of personal automobiles.
Moderator
November 26, 2015 - 12:07am
Nick, thank you for your comments; you seem to have thought a lot about these issues. With the personal details and Bronx-specific knowledge you give as well, they should provide room for a comparative discussion.