Reminder after murder in Naperville: the suburb has the lowest crime rates of a city its size in Illinois

In the aftermath of a murder Friday night in Naperville, I wanted to issue a reminder about crime in Naperville before anyone jumps to any conclusions about violence in the suburb. Naperville is a safe place:

Naperville is by far the safest city of its size in Illinois.

The 2010 crime statistics released by the FBI Monday show that the level of crime in Naperville is far lower than is typical for Illinois’ largest cities.

For every 10,000 residents in the city, there were about 151 property crimes in Naperville, compared to 203 in Elgin and 216 in Aurora…

Rockford and Springfield reported by far the highest crime rates among the state’s largest towns. For every 10,000 Naperville residents, 9 violent crimes were reported. Elgin (33), Aurora (36) and Joliet (36) had the next best rates.

Violent crime is rare in Naperville although not unheard of. The city likes to trumpet the low crime rate. Notice how it is part of the one paragraph lead-in to the “Welcome to Naperville” video on the city’s website:

Located 28 miles west of Chicago, Naperville, Ill., is home to approximately 145,000 people. This vibrant, thriving city consistently ranks as a top community in the nation in which to live, raise children and retire. The city is home to acclaimed public and parochial schools, the best public library system in the country, an array of healthcare options and an exceptionally low crime rate. Naperville has ready access to a variety of public transportation, housing and employment options. The city’s diversified employer base features high technology firms, retailers and factories, as well as small and home-based businesses. Residents also enjoy world-class parks, diverse worship options, the opportunity to serve on several city boards and commissions, a thriving downtown shopping and dining area, a renowned living history museum known as Naper Settlement and an active civic community.

Not just a “low crime rate” but an “exceptionally low crime rate.” This pitch is made by many people beyond City Hall.

Still, a well-regarded suburb like Naperville must always be wary of perceptions. Murders in your downtown entertainment district are not the kind of news that you want. Even if crime rates are low, perceptions can change quickly and crime is one of those factors that pushes suburbanites into other communities. See this commentary from one of the Naperville high schools:

As the population rises within Naperville so do the crime rates. Naperville is known as one of the safest cities to live and raise a family in. The town claims to have a protected and secure profile, though lately there have been signs of increasing crime rates.

Naperville police have found that burglaries rose nearly thirty percent since last year while robberies climbed nearly thirty-five percent. Although property crime rates are on the rise, violent crime has decreased from the past few years.  A few months ago, senior Stephy Drago had a few friends over at night. There was about eight cars lined up in front of the house and two of the cars were broken into. A paycheck and an IPod were stolen from one car and money from the other…

Even though property crime continues to expand, recently the Naperville Police Department has let go of six police officers in late November due to a budget deficit. Hundreds of residents protested through Downtown Naperville to the outside of City Hall objecting the layoffs of these officers…

Still, proper precautions should be taken such as hiding important valuables if left in a car or locking a garage door at night.

Even though the article says Naperville has low crime rates, the perception is that crime is always just lurking around the corner. Without the “right” number of police, the safety of the town could quickly disappear. Since Naperville is such a large suburb, I wonder if it is easier for people to make the association between crime rates and the big city, making Naperville into a different kind of place. Perhaps this all says more about how Americans think about crime in general: even in the nicest places, the perceived risk of crime is up.

We shall see what happens: I assume the city will go out of its way to assure residents that this downtown incident is an isolated one and not in the character of the community. On the other hand, residents and others might start to wonder if this sort of news will become “normal.” Managing these perceptions and expectations will be important as Naperville moves forward.

In trying to preserve open space in New Jersey, the land falls into the hands of the wealthy

Here is an interesting argument from a northern New Jersey columnist: the state’s effort to conserve open space by offering a tax break for farmland has left most of the open farmland in the hands of the wealthy.

It’s in the New Jersey Constitution, has been since 1963. Farmland is assessed for property taxes at its agricultural value, not its development value. To qualify, the property has to be at least five acres. Subsequent laws require that it generate at least $500 a year in agricultural revenue.

The goal was and is to preserve some of New Jersey’s diminishing stock of open land before it is all turned into condos and McMansions.

The program is working. But open land costs so much that the people who can afford to buy it tend to be well-to-do. This is unfair, critics say, because it enables rich people to surround themselves with open space and views while real, dirt-under-the-fingernails farmers are forced out of state…

Unsurprisingly, some owners of such New Jersey properties are megabucks celebrities. The rock star Jon Bon Jovi owns seven farm acres in historic Middletown, near the shore in Monmouth County, on which he paid $104 in taxes in 2010. Steve Forbes, magazine publisher, paid $2,005 in taxes in 2009 on 450 acres in Bedminster, in the Somerset Hills.

And here are former Gov. Christine Todd Whitman and her husband, John, who own 167 acres in Tewksbury, in Hunterdon County, on which they paid $1,521 in taxes in 2010, and 65 acres in Bedminster, on which they paid $173.

This sounds like a situation of unintended consequences: the law was intended to keep farmland open in the midst of suburban development but because of rising land prices plus tax breaks, the wealthy benefit.

Of course, there are other ways to conserve open space in the face of development. Contrast the approach in New Jersey versus the actions of the DuPage County Forest Preserve. After World War II, the Forest Preserve was very aggressive in grabbing open land, particularly land around waterways. If I am remembering correctly, by the late 1960s the Forest Preserve had over 15,000 acres in a rapidly expanding county that grew from almost 155,000 people in 1950 to nearly 492,000 in 1970 to over 904,000 in 2000. This didn’t come without a cost: the Forest Preserve had to find money to fund these purchases and there were complaints about rising local taxes plus the debt taken on in bonds. Additionally, the Forest Preserve ended up in several tussles over land with municipalities as both the County and suburbs wanted to control land before it disappeared. Today, there are still complaints about the Forest Preserve as the over 25,000 acres are maintained with taxpayer dollars. At the same time, there are a number of very nice sites and the land, unlike farmland, is open for everyone to use.

So if it came down to providing tax breaks  for the farms of wealthy landowners or having facilities that are taxpayer supported but also available to all, which would you choose? Presumably there are other options to choose from as well?

Why cities bid to host the Super Bowl (hint: it’s not just about the immediate money)

A story about how cities win the opportunity to host the Super Bowl has this explanation of why cities bid in the first place:

The NFL looks at the Super Bowl location as a kind of carrot to reward cities that are expanding the NFL’s sphere of influence, either by fielding a winning team, building a fancy stadium, or, ideally, both. Cities bid for the honor of hosting the Super Bowl because it brings in tourist dollars and prestige.

How much money is the subject of some debate. The NFL maintains that the Super Bowl brings in hundreds of millions of dollars to local economies. An article from the Indianapolis Business Journal says, “The NFL estimates Indianapolis will draw 100,000 to 150,000 visitors who could spend $200 million over a 10-day span.”

However, some find that number to be misleading. An academic paper from Holy Cross titled “Economics of the Super Bowl” argues that these numbers are “‘padded’ at least as well as the players on the field.”

Philip Porter, an economics professor from the University of South Florida, attempted to figure out the Super Bowl’s financial impact in 2007. The Sun-Sentinel reports that “he said he examined data from the Florida Department of Revenue showing expenditures in Miami-Dade County were $3.318 billion in February 2006 and $3.308 billion in February 2007.”

Regardless, there are some tangible benefits for citizens of Super Bowl cities. In the case of Indianapolis, “the city pledged to build a practice facility downtown that will be left in place for local residents to use.” There is also an increase in jobs (even if the jobs are temporary).

It sounds like the NFL pushes the economic argument: host the Super Bowl fans plus teams plus the media plus celebrities will spend lots of money. In addition, the temporary jobs that are created helps the Super Bowl bring money into a city. However, I wonder if this falls into a similar territory of the sports team who argues the city or state should spend taxpayer dollars to help build a new stadium or the team will leave. Studies show that these arguments are bogus: taxpayers end up spending money that owners profit because few cities can “afford” to let the big team go. Also, the article also suggests that a new stadium had to be built for the Colts for this bid to have any success and this cost money (some from the Colts, the rest from a food and drink tax). It sounds like it might be fairly easy to look at the economic data across Super Bowls.

My guess is that prestige, status, and the attention the Super Bowl draws and the money that this can lead to down the road is more important here. This helps put Indianapolis on the map and hopefully is not just a one-time event but rather helps lead to other big conventions and events (the city is already known as a sport town since it is home to the NCAA, hosts the Indianapolis 500) as well as attracting businesses who might otherwise not have a reason to visit the city. The immediate economic benefits may be nice to tout but this event gives a lot of air time and from what I have heard, media people have been impressed by the way Indy has rolled out the red carpet and also made all of the necessary locations within walking distance of each other. Wouldn’t it be great to be the mayor or other elected official who can claim that you helped bring the Super Bowl to Indianapolis? Wouldn’t it be even better to say that hosting the big game helped bring in more long-term revenue into the city? The real pull here is not the practice facility that is left behind but rather the fact that Indy is capable of hosting the biggest game in the United States.

Country music highlights the ideals of the country in the midst of a suburban nation

A music critic suggests makers of and listeners to country music are mostly in the suburbs, not the country:

Of course the actual lives lived in those small towns are somewhere within these songs, but many of the details are glossed over, romanticized, politicized or just plain ignored. There are megachurches in small towns now, not just cute little white chapels. There are Meth labs. There are business sections of town that don’t look too different from what you see in suburbs around big cities; e.g., not very pretty. There are factory farms, which bring some uglier realities than the idyllic farms of country songs (the stench of large-scale hog farms, for one). There are immigrants from other countries, possibly even (gasp!) illegal ones, often working the least appreciated of the farm and factory jobs. There are eccentricities and new developments that just don’t fit the portrait of rural America in country songs.

Plus, the country singers and songwriters aren’t all living in the country these days, but are just as likely to be found in your McMansions in the suburbs (look, for example, at the neighborhood Brad Paisley stands in, whether it’s actually his or not, in the music video for “Welcome to the Future”).

Country music fans live in such suburbs and cities, as well. Country today preserves the myths, half-truths and conjecture associated with the divide between small towns and cities, rarely acknowledging the gray areas in between. (Montgomery Gentry: “Don’t you dare go running down my little town where I grew up and I won’t cuss your city lights”). In country music today there is a constant sleight of hand going on with regards to “the country life”, shuffling up ingrained ideas of what it means with ones rooted in today or yesteryear.

Sometimes this might be political, a way to smuggle (or, more often, showcase outright) conservative ideas about the way America should and shouldn’t be. More often it’s probably of convenience or laziness, repeating past successes or playing into what artists imagine their audiences want to hear. But on another level this is about genre, about preserving a certain library of scenes and stories, to make the music recognizable as country and further the tradition. Then again, genres are shaped by the minds of the fans as much as the musicians, and by the times we live in.

In this argument about country music, the themes of country music highlight (a stereotype of?) the rural nature of America even as the producers and consumers are all part of a suburban or exurban existence. I tend to think of suburbs as an American adaptation to the issue of cities versus rural areas, a debate that began in the early days of the American project. The suburbs offer some of the city life, particularly the access to business and culture, with some of the country life with single-family homes and lots and a closer proximity to nature. In this case, the genre of music highlights a past era of American history as we are clearly a suburban nation today.

Are there country songs that celebrate the suburbs? I’m always on the lookout for cultural products that highlight the suburbs. Also, is it fair to single out a country music star for a McMansion – do other music stars also in suburban McMansions?

If there is a popular genre of music that holds out an ideal vision of the country life, is there a genre that does the opposite, hold out an ideal vision of city life?

Glaeser argues “desegregation is unsung US success story”

Residential segregation is a persistent feature of American life (a few earlier posts here, here, and here). Yet, economist Edward Glaeser argues that things are improving on this front:

As the figure shows, as of 1970, almost 80 percent of either whites or blacks would have had to move neighborhoods in order to achieve an even distribution of whites and blacks within the average metropolitan area. By 1990, that dissimilarity measure had dropped to 66 percent; it is 54 percent today. We are very far from living in a perfectly integrated society, but our nation is far more integrated than it was 40 years ago.

The progress over the last decade has been particularly dramatic. Every one of the 10 largest metropolitan areas experienced drops in both dissimilarity and isolation of 3.6 points or more. The isolation index is below 45 percent in every one of those 10 largest areas, except for Chicago. Long among the most segregated places in America, the Windy City has experienced a particularly dramatic decline in segregation since 2000.

The general decline in segregation has also been accompanied by a change in its nature. Before 1968, segregation is best understood as the result of hard, if often informal, barriers against black mobility. There were neighborhoods that were simply off-limits. The effect was that blacks paid more for housing, especially in more segregated cities…

After 1970, however, that pricing pattern switched. By 1990, blacks were paying less for housing than whites, especially in more segregated metropolitan areas. This switch can be explained if segregation, post-1970, reflects white preferences rather than barriers preventing black mobility. If the segregation that remains is the result of whites liking to live in primarily white neighborhoods, then we should expect whites to pay a price for limiting their own choices, and that is exactly what the data show.

The decline in segregation hasn’t been uniform across the black population. Much of the decline reflects relatively well- educated black Americans moving into white districts. While that freedom is something to celebrate, the exodus of the more skilled left many urban neighborhoods behind, and the effect of growing up in a segregated community appears to have gotten worse over time.

A few things to note here:

1. Glaeser ends by suggesting this is a triumph for everyone. While the numbers overall may have improved, there is still a lot of work to do – as he notes, cities like Chicago still have higher levels of segregation and only certain segments of the black population have had the options to move to whiter areas. On one hand, you want to celebrate progress but on the other hand, you don’t want to minimize the fact that this is still a major issue. The issue of where people (can) live is tied to a lot of other concerns including school performance, wealth, and life chances.

2. Glaeser suggests the change in recent decades is due to white preferences rather than the presence of real barriers. Two thoughts on this:

a. Really? There are no barriers for lower-income or non-white residents to move into wealthier areas? Why do we still then have cases about exclusionary zoning (such as an example in Westchester County)? Why there are still big debates about constructing affordable housing (an example from Winnetka, Illinois)?

b. Glaeser seems to suggest these white preferences are okay since they pay for this privilege. This is the appropriate penalty for essentially restricting the abilities of others to live in certain places? I bet a lot of sociologists might have some complaints about this – this is the key difference between de jure and de facto segregation and both have negative outcomes.

Another story on Glaeser’s study has a response from a sociologist who suggests some caution:

“We’re nowhere near the end of segregation,” says Brown University sociologist John Logan, who was not involved in the study. “There are still no signs of whites moving into what were previously all-minority neighborhoods, and there is still considerable white abandonment of mixed areas.”

3. Glaeser also seems to be only looking at the black/white divide in where people live, the widest measure. I would be interested to hear his explanations for the differences between whites and other groups.

The shopping available inside the Pentagon

The Pentagon has more than just military related offices and facilities within its 6.5 million square feet: it also has shopping.

The Pentagon is one of the largest office buildings in the world. But you are never more than a stone’s throw away from fast food. McDonald’s. Popeye’s. Burger King. There’s a Baskin Robbins barely 50 yards from the press pen, which is just cruel. The Taco Bell is more of a hike, but military life rewards the bold…

Imagine if Thomas Kinkade had served in uniform. That’s what you’ll get at the Pentagon’s paintings shop — gauzy, unsubtle oil-on-canvas depictions (and tasteful reproductions!) of military scenes. Why someone would want portraiture of being wounded in battle is a separate question…

Military life means changing addresses — a lot. To cope with the dreaded PCSing (that is, the verbed version of the acronym Permanent Change of Station; what we civilians call “moving”) there’s a luggage store a few corridors down from the office, and it sells the finest in leather goods. Especially if you like marked-down Louis Vuitton…

Bored by the endless PowerPoints that a day in the Pentagon promises? Sneak out to the Best Buy to figure out how you can finance an iPad on a bureaucrat’s salary. Or linger in front of the big flatscreens and get caught up in a Lost episode. The store has saved many a beat journalist whose voice recorder ate it right before a budget briefing.

It seems like you have quite a large captive set of consumers though it would be interesting to know how many employees visit these retailers. What kind of bidding takes place to get your business in the Pentagon?

This does make me wonder how much designers/architects of big office buildings design things so that workers will stay within the building to spend money at chain retailers. At some point, having a large enough building likely justifies placing a number of service businesses within the building itself. Are there any civilian structures that rival the selection of the Pentagon?

What the future Navy Pier might look like

Navy Pier is in for a redesign and here are quick summaries of the redesign plans from the five competitors:

•AECOM/BIG — The Crystal Gardens would become a “vertical urban farm” to supply produce to restaurants at the pier. A grand staircase would sweep over a proposed addition to the Chicago Shakespeare Theater and offer uninterrupted skyline views. On the pier’s far east end, a tiered platform would create a “lifted corner” that would rise above the Dock Street promenade, providing another lookout. A tier on the other corner would descend directly to the water.

•Davis Brody Bond/Aedas/Martha Schwartz Partners — A series of boardwalklike extensions on the pier’s southern edge would include a variety of features, among them slips for tour boats, an outdoor theater, fishing areas and a beach. A “flyover” ramp would connect Pier Park to the boardwalks. A gondola would carry visitors to the pier from Michigan Avenue and Wacker Drive.

•!melk/HOK/UrbanLab — Curved platforms would extend over the pier’s southern edge, providing lookout points. Boardwalks at the pier’s eastern end would let visitors get closer to the lake; below the platforms, and visible to the visitors, would be underwater “fish resorts” where fish would congregate. The towering structure called the Glacier would rise out of the lake off the pier’s eastern end.

•James Corner Field Operations — Undulating steps would join Pier Park with the Dock Street promenade. The plan also suggests turning the interior of the Crystal Gardens into a striking display of hanging gardens and putting oval-shaped cabs on the nearby Ferris wheel. A swimming pool with a sand beach would run along the pier’s southeast corner at lake level. A stepped amphitheater would lead down to the eastern end of the pier, where a platform would extend into the lake.

•Xavier Vendrell Studio/Grimshaw Architects — Circular arrangements of trees and plants would be installed to soften Pier Park. They would enliven the South Dock with pocket parks, terraces and kiosks. A wedge-shaped “horizon walk” platform would extend outward and upward from the pier’s east end, creating another vantage point to gaze over Lake Michigan and providing another reason for people to walk the entire length of the pier.

The images give you some ideas of the interesting ideas in play here. Check out “The Glacier” that would jut out of the water at the east end, various ways of expanding into the walkways into the lake, and a raised eastern corner paired with a depressed eastern corner (image 6 and 10/12 and 13, respectively, in this gallery). The idea that looks the most interesting to me: images 14 and 15 show a grand staircase that would really transform the “roof” of the structure.

At the same time, I can’t imagine that the City will allow anything too crazy, particularly something that might mar the lake views. After saving Grant Park from major changes with the proposed move of the Children’s Museum, I think Chicago will play it relatively safe while trying to offer more consistent recreational opportunities along the pier. I imagine there is more room to play with the walkways/promenade along the lake though this still has to appeal to a broad swath of residents and tourists. Perhaps the best way to do this is to make the promenade greener while also better utilizing the existing structures.

I do like the fact that this process has been made public. While some of these ideas are quite unique, it gives the public a larger vision about public spaces and what is possible. We could benefit from thinking bigger about what these types of public spaces could be like and how we could all benefit.

Are strip malls at “the end of the road”?

One sociologist argues that while strip malls have seen much better days, they can be transformed in ways that they can once again be beneficial:

Strip malls — once anchors of postwar North American suburban neighbourhoods — are doomed, with thousands across Canada and the United States already derelict and eyed by land developers.

But at least one Canadian academic sees value in maintaining the ubiquitous local retailing plazas, and has amassed proposals such as adding community gardens or toboggan slides, or morphing them into giant bee hives or parking lots for food caravans.

“Strip malls were once the economic hubs of new suburbs,” said Rob Shields, a sociology professor at the University of Alberta in Edmonton, who received a government grant to rethink strip malls to benefit communities around them…

More than 11 per cent of strip malls in North America are derelict, representing 27 million square metres of vacant retail space, according to the Washington-based Urban Land Institute.

You can see some ideas generated for “reinventing the strip mall” here. This sounds like it fits into a larger idea, retrofitting, where developers and planners take “failed” projects, such as strip malls or big box stores, and design more sustainable, more urban places.

A few more thoughts:

1. If the strip mall is indeed in inevitable decline, I wonder if anyone is tracking what happens to all of the old strip malls. Is there a common use for them or more frequent uses? Will a majority simply be demolished and replaced with something more profitable?

2. It would also be interesting to hear how suburbanites themselves perceive the decline of strip malls – do they prefer “power centers” or is there something lost when strip malls disappear? Perhaps many won’t rue the loss of strip malls because of their very functional design but there may be more who don’t like the disappearance of some of the businesses, like Radio Shack, that once thrived in strip mall size settings.

3. Are strip malls excellent places for small businesses to start and thrive? Perhaps they are not used in this way but I was trying to think of commercial uses that might be particularly suited to a strip mall.

The rapid urbanization of China: from under 20% to over 50% of the population in cities in thirty years

Much change has occurred in China in recent years and here is one of the big ones: more than 50% of residents are living in cities, up from less than 20% in 1980.

FOR a nation whose culture and society have been shaped over millennia by its rice-, millet- and wheat-farming traditions, and whose ruling Communist Party rose to power in 1949 by mobilising a put-upon peasantry and encircling the cities, China has just passed a remarkable milestone. By the end of 2011, according to the National Bureau of Statistics, more than half of China’s 1.35 billion people were living in cities.

Demographers had seen this moment coming. The 2010 census showed the differential between town and country to be within a mere few tenths of a percentage point. And yet it is still a remarkable turnaround. In 1980 fewer than a fifth of Chinese lived in cities, a smaller urban proportion than in India or Indonesia. Over the next ten years the government remained wary of free movement, even as it made its peace with free enterprise. Touting a policy of “leaving the land but not the villages, entering the factories but not cities”, it sought industrialisation without urbanisation, only to discover that it could not have one without the other.

This is rapid change that affects a lot of social life. It reminds me of the era when sociology emerged in the 1800s where observers started noticing that the move from more rural to more urban life was affecting things like social relationships, social cohesion, governments, and more. Does China have a similar crop of observers thinking through all the effects this rapid urbanization might have?

The article is accompanied by a nice chart comparing China’s urbanization to other regions and countries: it is now ahead of India and South-East Asia though still lagging behind Brazil, the US, and Western Europe. The Census Bureau has tracked the changes in the US in this document (see the bottom of pg. 33): the US first had more than 50% of the population living in central cities and suburbs in 1950, up from 28% in 1910. From the period of this chart (1910 to 2000), the US has not had such rapid change in urbanization as China.

Living in an era before snow plows

I have wondered this before: how did people clear roads and streets without modern snowplows? Of course, we can reconsider this every so often when an eastern or southern state encounters snow and doesn’t have the equipment to deal with it all but I’m talking about the days before snow plows even existed. Here is some insight:

That changed in the 1840s, when the first snow plow patent was issued. According to a wonderfully comprehensive history by the  National Snow and Ice Data Center, the first snow plow was deployed in Milwaukee in 1862. They write that the plow “was attached to a cart pulled by a team of horses through the snow-clogged streets.”Over the next several years, other cities adopted the horse-drawn plow, along with a sense that snow removal was a city’s problem. As the Data Center notes “the invention of the snow plow initiated widespread snow removal efforts in cities and also created a basis for municipal responsibility in snow removal.”

Of course, with great plowing comes great responsibility. Cities were able to clear main streets, but side streets and sidewalks often ended up blocked off by huge mounds of snow. Again, according to the National Snow and Ice Data Center, businessmen and townsfolk “complained and even brought lawsuits against the plowing companies … [claiming] their storefronts were completely blocked with mounds of plowed snow, making them inaccessible to their customers.”…

In the early 20th century, the automobile entered the picture, creating new problems and new possibilities for snow plowing. In 1913, New York unveiled the first motorized dump truck (complete with tractor tires), abandoning the traditional horse-drawn cart. In the 1920s, Chicago unveiled the snowloader, an “ingenious contraption” that “was equipped with a giant scoop and a conveyor belt. As the snow was plowed, it was forced up the scoop, caught by the conveyor belt which carried it up and away from the street into a chute at the top where it was dropped into a dump truck parked underneath.”

Industrialization and technological change brought with it new forms of snow plowing plus expectations that cities would clear the streets. It would probably be fascinating to hear more about these expectations; did they arise because streets are city property? Did cities balk at having to devote resources to clearing snow as opposed to pursuing other goals? What were the outcomes of these lawsuits between business owners and municipalities? It sounds like the expectations about snow removal arrived at roughly the same time (late 1800s) that cities started providing other services to everyone including sewers, water, and police and fire coverage. There could be an interesting story here.

If many communities are facing budget shortfalls, is there any community willing to consider privatizing snow removal? In many places, it isn’t exactly a full-time task.

Another thought: how much more difficult does suburbia make snow plowing and removal? With the variety of streets that subdivisions add to the mix including cul-de-sacs and arterial roads, can snow plows be more efficient in cities?