Category: Urbanism

Pedestrian Observations from Providence in Summer

I’d only visited Providence once, for two hours in the dead of winter, and found the downtown/mall area dreary. I just visited twice again to look at apartments, and saw much better. Providence’s downtown is still dominated by single-use office buildings and was dead on Sunday, but the East Side neighborhoods I saw near Brown are walkable.

To see what I’m talking about, look at photos like this, this, this, this, and this. The streets are about the same width you’d expect of suburban side streets: the roadways are 6-7 meters on the narrowest streets, and 9-10 meters on slightly wider residential streets. The buildings are detached and look similar to those in the older postwar suburbs, though in fact many are historic and date back to the 1800s or even the late 1700s.

The difference with the suburbs is that there are no setbacks, which means the buildings provide an adequate street wall. The building to building distance is about 12 meters at the narrowest and 18 at the widest. Many streets are planted, so the trees provide shade and make it pleasant to walk in the summer heat. The streets are reasonably car-friendly and most apartments I’ve seen come with parking, but they don’t let the parking interfere with a pleasant pedestrian experience.

It’s at the periphery of the neighborhood that you can see signs of the general auto-oriented nature of the area. South and west of campus, the two commercial streets are Wickenden and (South) Main. There are a few grocery stores and eating places on other streets, but those two have more commercial activity. Each alone is walkable, with reasonable traffic speeds, and a street wall. However, their intersection, located too close to the freeways that surround and divide the city, is not. Its signal timing is pedestrian-hostile, and instead of more intense corner commercial development, it has a parking lot, a gas station, and open space.

And downtown Providence is a completely different world from the East Side. The streets are in principle walkable, but many buildings are urban renewal projects, and the area is single-use office space apart from some condos right next to the train station. The commercial development has for the most part been collected into the Providence Place Mall or the historic streets close to Brown, such as Main. By the standards of the larger cities of the Northeast, or even New Haven, there’s very little there.

Little Things That Matter: Stoplight Phasing

In Manhattan, most intersections have two stoplight phases: one permitting all north-south traffic, and one permitting all east-west traffic. Each phase lasts about 45 seconds, ensuring that pedestrians can cross even the widest avenues in one go with time to spare.

In Tel Aviv, the signalized intersections are almost never as in Manhattan. Even intersections of major streets with side streets will usually have three phases, and intersections of two major streets will usually have four, permitting conflict-free turns; turn conflicts with pedestrians exist on such intersections, but are uncommon.

From the traffic engineer’s perspective, Tel Aviv intersections are better – they’re supposed to be safer and smoother for the driver, with none of the snarl that happens when a car driving on Upper Broadway tries to turn left. They’re also hell for anyone not in a car, since waits are much longer, and to compensate for the larger number of phases each phase is shorter. This discourages enough pedestrians as to reduce the number of pedestrians for cars to hit, creating an illusion of even more safety.

If there’s enough car traffic, then streets with complex stoplight phasing are uncrossable 75% of the time. But if the street is median-divided, this is even worse, because the traffic engineers try to optimize car traffic, which means the pedestrian green on the two halves of the street is unsynchronized. At some intersections, one direction of a crossing is pessimized for the pedestrian: that is, after crossing one half of the street, the pedestrian will have to wait nearly a full cycle to cross the other half.

There are emerging calls for complete streets, which include such important features of walkability as wide sidewalks and frequent crosswalks. But the frequency of the crosswalks is only partial consolation if the stoplights are optimized for high car speed rather than high walking speed. For a healthy, young individual, the difference between not having to wait at intersections and having to wait a minute and a half every 300 meters is the difference between walking at 6 km/h and walking at 4 km/h. Traffic engineers do not tolerate phasing that slows down cars by 33%, and should not tolerate phasing that so slows down pedestrians.

The above does not apply as much to low-traffic areas such as Downtown Athens, Georgia, because there are sufficiently few cars that locals ignore pedestrian stoplights anyway. But in a large city with many cars such as Tel Aviv, it’s difficult to cross safely on red. As a result, streets that are no wider than a Manhattan avenue can take multiple minutes to cross, and one such street, Ibn Gabirol, divides the neighborhood it passes through in a way that 42nd and Broadway never do.

Ibn Gabirol and similar streets are not suburban arterials. They’re not like Athens’ Baxter Street. They have a street wall, very wide sidewalks, and mixed uses, just like Manhattan avenues. They also have enough foot and car traffic that they don’t feel desolate. They feel very walkable, as long as you stay on one side; it’s when you try to cross that their auto-oriented nature becomes apparent.

Pedestrian Observations from Athens, GA

I’m currently at a conference at UGA, located in a town that clearly tries to be walkable, and for the most part fails: for example, it has bike lanes on high-speed arterials and unwalkable streets with share the road signs.

My observations may be colored by the fact that it’s the intersession now rather than the middle of the academic year, but walking is rare. Browse the photostream including the above photos; there aren’t many pedestrians.

Outside campus and a downtown area of about four by seven blocks, walking is downright foreign. Last night while walking back from a dinner at a suburban main street strip, we were accosted by two cops who accused us of jaywalking and kept going on about how unsafe it was and how they could arrest us. They didn’t arrest us – just lectured us about inebriation (I do not drink; the other two people I walked with had drunk a little, but why not harass drunk drivers instead?), common sense, and the danger of walking. In New York it’s routine to harass and intimidate cyclists even for legal behavior, but walking is considered normal; not so in Athens, where it’s apparently only for college students, very poor people, and outsiders.

Another thing to note is that the streets aren’t overly wide, and many have bike lanes. Look those streets up on Google Earth: the Baxter Street roadway is about 12 meters wide, vs. 9-10 for a Manhattan street and 18 for an avenue. The difference with Manhattan is that there’s no street wall, making the streets look wider than they are – see this photo. Building-to-building, Baxter is about 40-50 meters wide, vs. 30 for Manhattan avenues. And unlike on the Manhattan avenues, traffic volumes on Baxter are not high, which means cars can speed on arterials in a way that’s impossible on First Avenue.

As usual in small towns and suburbs, almost all of this space between buildings that isn’t used for cars is not used for pedestrians, either. The nicer off-downtown residential areas in Athens have a meter or two of sidewalk on each side. Sometimes there’s a sidewalk just on one side. The rest is dirt or poorly kept grass, or sometimes parking.

One thing not captured in the photos is the sheer difficulty of crossing the street. This is by far the worst feature I’ve found other than the long distances of walking; the narrow sidewalks are unpleasant, but for the most part usable. A friendly stoplight phasing is possibly the most underrated feature of complete streets. In Manhattan, there are two phases, one permitting all north-south traffic and one permitting all east-west traffic, and each is about 45 seconds. In Athens, the phases are more complex, with different turn lights, and pedestrians only have 10-15 seconds out of a full cycle.

Another thing not captured on camera is the lack of normal amenities even in downtown Athens. The downtown area is full of restaurants and entertainment; it is short on supermarkets and grocery stores. What it tells me is that they’re not thinking of downtown as a place where anyone might live, but rather as a destination for tourists, college students with meal plans, and suburbanites.

There are worse cities than Athens. My last conference, in Worcester, ended in my having to walk about 3.5 kilometers to the train station, on a sidewalk covered with rubble and in the striped median of a grade-separated arterial. The striped bike path on Baxter is more continuous than some bike paths in Chicago. Athens clearly tries, within the general paradigm of a spread-out city with a suburban form. It’s just not enough for real walkability.

Reform vs. Reformism

Urban politics in what’s now the US Rust Belt has been dominated by the same battle between the machine and the reformists since the machines first came into existence in the 19th century. Since the national partisan battles weren’t too applicable, especially after the cities became dominant-party Democratic, the battle lines cemented based on this reform vs. machine issue, creating the same intense partisanship as at the national level.

I encourage everyone to read the Historic American Engineering Record‘s first two articles about the New York City Subway, by Wallace Katz and Clifton Hood. The importance is that the same battles are being fought today, with the same social ideas behind each group. The people Katz calls the patrician reformers still try to fix social problems with engineering and design, only they’re disaffected with cars and suburbs rather than cities.

The ultimate symbol of machine politics in New York is Sheldon Silver; the ultimate symbol of reformism is Michael Bloomberg. The former bloc has gotten almost as much beating as it deserves from Streetsblog, Cap’n Transit, and other congestion pricing supporters. But the reformists must be equally examined, because although they want transit to be better, they want it better their way and this is not the same as transit advocacy.

The reformists’ idea of reform is framed in partisan opposition to the machine; bipartisanship in the national sense of liberal vs. conservative is just part of the plank. They’re not wedded to competence, which is a different animal. Being seen as doing something is more important than success. That’s why Jay Walder uses the high costs of the MTA as an excuse to go through with another failed smartcard scheme. Reformists have a lot of valuable outside knowledge to bring to the table – for example, proof-of-payment on buses and commuter rail – but so far the administration hasn’t really done any.

The opposite of outsider knowledge is insider knowledge, and reformists that ignore it will not succeed. The Swiss and the Japanese grew expertise from the inside, and learned from outsiders where needed. When overstaffed, they lost workers to slow attrition, rather than mass layoffs whose size is determined by labor lawyers and which are not targeted at the most redundant workers. Of course, the only people with insider knowledge are the union members who’d be let go – but this underscores the need for consensus, not heavyweights.

Another reformist problem is the unwillingness to invest in the lower class, except for paternalistic redevelopment schemes. This was true in the urban renewal era and is still true today. JSK’s bike lanes and pedestrian plazas, almost the only good import of the city’s reformist class, are a sop to gentrification. The opposition of community boards is part of the mythology of fighting for the greater good, leading to the same predictable authoritarianism as that of Robert Moses. In reality, when East Harlem practically begged the city for bike lanes, JSK ignored it.

Bloomberg impresses people who don’t know which good reforms he’s squandered because they don’t fit his preconceptions. A friend of a friend wrote a computer program that would automatically match substitute teachers to principals who needed them, back when Bloomberg’s focus was reforming education. The program would’ve saved the city $20 million in administrative costs. The administration refused to consider it, because it conflicted with the idea of running schools like businesses.

Reform should instead be done right. The first traditions to go should be those that impede the formation of consensus; unfortunately, this requires learning from the political systems of non-English-speaking countries, which means it’s extremely unlikely to happen. Beyond that, learning from outsiders should be done in the tradition of Japanese industrialization and European proliferation of good industry practices rather than in that of American companies bringing heavyweight CEOs to save them. The CEOs and the reformists are both more mobile and more insulated from their mistakes than the shareholders or city residents they affect. Perhaps the first thing American cities need to learn from the outside is what the proper way to learn from the outside is.

More on Density

Commenter Benjamin Hemric replies to my previous post on Manhattan density, arguing that,

1) It’s very interesting that people seem to have very, very different goals and objectives here — and it’s good that these are expressed and out in the open. Otherwise people wind up talking past one another.

The Jane Jacobs goal (which is where I feel I’m coming from) believes there should be HEALTHY (self-generating, market-based) cities (for a variety of reasons, including economic and social ones) — and more and more of them to meet a growing world population. (I think Glaeser also shares this part of the Jacobs viewpoint.)

The saving of the environment (to extend what I see as the Jacobs’ viewpoint) is a by-product. And it isn’t from piling more and more people into a relatively small part of a city but from having many successful high density districts — and by having many dense cities, which by their very nature are greener than suburban sprawl.

2) It seems to me that it’s important to remember that the outer boroughs (to use the NYC example) and nearby northern New Jersey are not pristine undeveloped land, but already pretty well built up albeit oftentimes at relatively low density areas — so making them denser also helps save the environment.

The implied question is as follows: the New York region wants to add more people; where should we plan on housing them?

My environmentalist answer is that they should be housed in dense areas – it doesn’t really matter which ones, as long as they’re walkable and transit-accessible. Even marginally dense areas are okay as long as it’s part of a concerted effort at TOD – say, residential and commercial upzoning in Eastern Queens along the LIRR in conjunction with offering rapid transit-like service levels on commuter rail.

The Jacobsian answer that Benjamin is giving is that they should be housed not in the densest neighborhoods, but in somewhat less dense neighborhoods, on the theory that they’d become greener due to the additional flux of residents. This is, in principle, a good idea. The residents would cause more environmental impact than in Manhattan and live in what are now less walkable neighborhoods, but would induce such development that the impact of existing residents would drop. But it’s not clear which effect dominates, and since both options are much better than any alternative, both should be legal and encouraged; there’s no need for landmarking to force people out of the Village and into Brooklyn.

But that’s all in principle. In practice, densifying outer-urban neighborhoods is a political nightmare. Christof Spieler once wrote about how in Austin, development is governed by a coalition of NIMBYs and suburban developers and boosters. The result: it’s hard to increase density in existing urban neighborhoods, and easy to develop greenfield exurbs. In New York, a similar thing is happening, in reverse – it’s easy to develop in Manhattan’s non-landmarked areas, and hard in the outer-urban neighborhoods and the suburbs. (New York’s exurbs are also growing very quickly, but are too remote and lightly populated to matter.)

Adding density to parts of Queens and Brooklyn where it would introduce a tipping point in favor of walkable urbanism may well be harder than repealing landmark restrictions in the Village. Community boards are always drawn from the wealthier and more connected segments of society, and in those areas they invariably own a car. A new development in Flushing was saddled with extra parking, and NIMBYs all over outer-urban New York oppose dedicated bus lanes due to loss of car lanes.

The conclusion is that the alternatives to density increases in Manhattan are more parking garages all over the Outer Boroughs, and greenfield suburban development in the few parts of the suburbs in which there’s space (typically nowhere near rail). I’m all for walkable densification along outer ends of subway lines, or if commuter rail modernizes then also near train stations. Wake me up when that happens. Until then, the best approach is supporting political reforms to make both Manhattan densification and outer borough densification easier.

How Dense is Too Dense?

Whenever people who support restrictions on building want to justify the limits of density, they say the area is too dense, or possibly too dense for the present traffic capacity or quality of life. This is true regardless of density. It’s against this background that one should read Kaid Benfield’s article in Grist attacking Ed Glaeser’s proposals for upzoning in Manhattan. Manhattan, we are told, is already the densest county in America, so why build more?

Multiple lines of response come to mind; you should think of them as separately as possible. The first is that Benfield not only makes an argument about Manhattan’s density, but also posts lovely images of landmarked streets in the West Village, which Glaeser wants to permit replacing with 50-story residential towers. In light of that, let us remember what historic districts are, in practice: they are districts where wealthy people own property that they want to prop up the price of. They are designated arbitrarily, make arbitrary rules, and protect clearly non-historic buildings.

The densest neighborhood in Manhattan, the Upper East Side, has about 46,000 people per square kilometer, rising to about 70,000 in the upper-middle-class (as opposed to wealthy) section east of Third Avenue. The West Village only has 26,000, so there’s clearly room to build up.

There is no inherent reason to go by county or borough density rather than by neighborhood density. By the same token, one could say that the Northeast is the densest region in the US and therefore requires no more density. Southern boosters might like this, but not the people reading Grist, who care about environmental protection more. There is no induced demand with people: allowing taller buildings is not going to make more people be born, which means all it does is permit population to shift from exurbs to city centers.

What is more, there already is demand for more housing in Manhattan: last decade Manhattan’s population grew faster than that of the rest of the city as well as the rest of the metro area, amidst skyrocketing rents. In fact the reason I don’t trust the census is that it believes that New York added more housing units than people last decade, at a time of rising household size and stable vacancy.

There are ways to increase Manhattan density without plopping 50-story towers everywhere. For one, even the Upper East Side has few such towers – it is built to about the 20th floor. Unlike with office buildings, which favor more agglomeration, residential buildings remain mid-rise even if higher densities were possible, as they were in the 1920s; today, on the order of 1% of the city’s residential stock is located above the 20th floor. However, any density increase requires a rise in height – from 5 floors to 7 in Harlem and the Village, from 10 to 15 in Morningside Heights, and so on – without the loss of lot coverage coming from project-style towers.

Suburban TOD

Hicksville is located 43 kilometers east of Penn Station on the LIRR Main Line. It’s a major job center of eastern Nassau County, with 25,000 jobs and a rather large shopping center adjacent to the train station. The station itself gets about 8,000 weekday boardings, more than any other suburban LIRR station except Ronkonkoma.

However, the station has no TOD. The shopping mall is transit-adjacent, but the route to it from the station passes through parking lots at both ends. The station is surrounded by thousands of parking spaces; a recent reconstruction of a parking garage cost $364 $36.4 million for 1,400 spaces, which at $26,000 per space is more than the per-rider cost of such expensive transit lines as Second Avenue Subway. As a result, the total number of people getting off at Hicksville in the AM peak is 700, for a rail share of 3%.

Such failure is quite common in the US. Leaving aside stations explicitly configured as park-and-rides, such as Metropark or Ronkonkoma, off-CBD stations have to have at least some retail and office space usable by reverse commuters, on the pure financial grounds that reverse-peak service is nearly free to provide. Otherwise, light rail and subway trains run empty in the reverse-peak, and commuter trains park downtown, leading to outsized costs for CBD railyard expansions.

For a comparison of how good TOD looks like, see this industry presentation about Tokyo’s Tsukuba Express. As is normal in Tokyo, the line is very expensive: $140 million per km for a line that’s just 26% in tunnel, though the tunnel percentage is much higher within the central city. But per rider this is not too bad, because as the images in the presentation demonstrate, intense TOD followed construction. Stations are surrounded by high-density office and residential buildings and not parking lots.

A theme I am going to revisit is that high construction costs should not be an excuse to scale down service levels. It may be expensive to develop on the parking lots adjacent to the station, but the ridership is always worth it.

If there’s to be a transit revival, it’s imperative to increase mode share at major suburban centers. The transit mode share for people working in Manhattan is 75%, while the auto share is only 14% – and the auto mode share is dominated by the suburbs that use the GWB, rather than Long Island. There’s some room to expand Manhattan employment, but not enough to make a dent in the region’s car use. It’s critical to instead make it easier to use transit and harder to drive to work in such secondary downtowns as Flushing and Jamaica, and in such major suburban centers as Mineola and, yes, Hicksville.