Category: Chicago

Chicago has too many traffic signals

IMG_2496

People wait at a stop light on the first major ring road in the city center of Amsterdam. Photo: Northeastern University, Boston

I was flabbergasted to learn today that there are only 5,500 signalized intersections in all of the Netherlands. I was reading Mark’s blog “Bicycle Dutch” and he interviewed a city traffic signal engineer in Den Bosch, who described how different road users are prioritized at different times based on the complex programming. (Watch the video below.)

In Chicago there are more than 3,000 signalized intersections. And I believe this is way more than we need.

I understand more than the average person how traffic moves in each place and how it “works”. There is such a thing as too many traffic signals because at some point the signals (their proximity and their programming) start causing delays and conflicts.

Saying that traffic – of all kinds, bikes, trucks, buses, delivery vans, and personal vehicles – moves better in cities in the Netherlands than in Chicago is an understatement.

Aside from their impacts on traffic (which can be good in some situations, but aggravating existing problems in other places), signals are very expensive to purchase, install, and maintain.

In Chicago, an alderman (city councilor) can use part of their $1.3 million “menu” money annual allocation to purchase a traffic signal for $300,000. That’s money that won’t be used for transportation investments that reduce the number of severe traffic crashes as well as reduce congestion like bus lanes and protected bike lanes.

Let’s review

I compared their populations (about 17 million in the Netherlands and 2.7 million in Chicago) and saw that Chicago has a lot more traffic signals per person.

On Twitter, however, I was challenged to find the number of traffic signals per mile driven, not per capita.

So, I did, and I was surprised by the result.

This assumes I collected the right statistics, and converted the driving figures correctly.

The surprise: There are more passenger miles driven (known as VMT) in the Netherlands, per capita, than in Chicago. I actually can’t even get passenger miles driving in Chicago – I can only find “all miles” driven. And that includes trips on interstates that pass through Chicago but where the driver or passengers don’t stop in Chicago.

Here’s the analysis, though.

Driving

  • According to the OECD, there were 145,400 million kilometers driven on roads, for passenger transport, excluding bus coaches, in the Netherlands in 2013 (the latest year for which data was available in the Netherlands). That’s 145.4 billion kilometers. (Source, no permalink.)
  • According to the Illinois Department of Transportation, there were 11,150,109 thousand miles for all kinds of road transport, in Chicago in 2013. That’s 11.2 billion miles, which converts to 17.9 billion kilometers. (Source)

Population

  • In 2013, the Netherlands had 16,804,430 inhabitants (they had declared reaching 17,000,000 this year), according to the OECD.
  • In 2013, the City of Chicago had 2,706,101 inhabitants, according to the U.S. Census Bureau’s 2009-2013 ACS 5-year estimate.

Signals

Results!

  • The Netherlands has over 39 signalized intersections per billion kilometers traveled.
  • Chicago has over 167 signalized intersections per billion kilometers traveled.

Oh, how Chicago land use is controlled by spot zoning

If you only had a zoning map to try and understand how the different blocks in the City of Chicago relate to their neighborhoods and the city at large, you might have the idea that the city has no neighborhoods, but is actually a collection of tiny, randomly dispersed zones of differing land uses.

And then when you walked those areas you’d find that the zones, which attempt to prescribe a land use, at least nominally, don’t have anything to do with the restaurant, housing, and commercial building mix of uses actually present.

No plan would have been devised to create a map like this.

Over the last five years, and surely over the last 14, the City of Chicago has been divided (really, split) into an increasing number of distinct zoning districts.

The city’s zoning map is updated after each monthly city council meeting, to reflect the numerous changes that the 50 alders have approved individually. (Their collective approval occurs unanimously in an omnibus bill.)

Every few months I ask the Chicago Department of Innovation and Technology (DoIT) for the latest zoning map, in the form of a shapefile (a kind of file that holds geographic information that can be analyzed by many computer programs). While Chicago has one of the country’s best open data offerings, some datasets, like zoning, don’t get updated in the catalog.

There are two ways I can analyze and present the data about the quantity of zoning districts. Both, however, show that the number of distinct zoning districts has increased. This means that the city is divided even more finely than it was just six months ago.

Analysis 1: Period snapshots

I have the zoning shapefile for five periods, snapshots of the city’s zoning map at that time. From August 2012 to now, May 2016, the number of discrete zoning districts (the sum of all B3-5, RS-1, DX-7, etc. zoning classes) has increased 7.8 percent.

Period Zoning districts change

August 2012

11,278

September 2014

11,677

3.42%

June 2015

11,918

2.02%

November 2015

12,015

0.81%

May 2016

12,162

1.21%

I collect the period snapshots to show the history of zoning at a specific address or building in Chicago, which is listed on Chicago Cityscape. For example, the zoning for the site of the new mixed-use development in Bucktown that includes a reconstructed Aldi has changed four times in four years.

aldi zoning history

Analysis 2: Creation date

The zoning shapefiles also have the date at which a zoning district was split or combined to create a new district, either with a different zoning class (RT-4, C1-1, etc.) or a different shape.

With the most recent zoning shapefile I can tell how many new zoning districts were split or combined and a record representing it was added to the list. The records start in 2002, and by the end of the year 7,717 records were created.

The following year, only 14 records were added, and in 2004, only 6. The Chicago City Council adopted a rewritten zoning code in 2004, and I guess that the zoning map was modified prior to adoption. After 2004, the number of new zoning districts picks up:

year zoning districts added by splitting/combining cumulative change

2002

7717

7717

2003

14

7731

0.18%

2004

6

7737

0.08%

2005

267

8004

3.45%

2006

497

8501

6.21%

2007

561

9062

6.60%

2008

592

9654

6.53%

2009

304

9958

3.15%

2010

245

10203

2.46%

2011

271

10474

2.66%

2012

277

10751

2.64%

2013

299

11050

2.78%

2014

397

11447

3.59%

2015

367

11814

3.21%

2016

173

11987

1.46%

none listed

175

12,162

It seems there’s a light relationship between the recession that started in 2008 and the number of zoning changes made. There are more made annually before the recession than after it. It actually seems to track with building permits (sorry, no chart handy).

What should this area in Chicago be called?

The area is generally bounded by Harrison Street or Congress Parkway, Dan Ryan Expressway or Desplaines Street, Roosevelt Road, and the Chicago River.

The area is generally bounded by Harrison Street or Congress Parkway, Dan Ryan Expressway or Desplaines Street, Roosevelt Road, and the Chicago River.

Currently it’s called the South Loop, which is a neighborhood name. It’s in the “Near West Side” community area. See how the City of Chicago mapped the “South Loop” in the past when it used to keep track of neighborhood boundaries.

I think it should have a new name. It should not be called the South Loop because the commonly identified center of the South Loop is probably somewhere between Roosevelt and Harrison, and Michigan Avenue and State Street, very far from this area. It just might be the Roosevelt CTA station, which has over 12,000 boardings a day.

Saying that you’re going to some business that’s west of the river and saying that the business is in the South Loop would confuse a lot of people as to what its nearby.

It’s more of an industrial and commercial area that gained a lot of new big box (faceless) retail in the 2000s, so very few people live there. There are several stores that exist that came decades before the big box outlets; for fabric, clothing, shoes, and suits. It’s probably these independent store owners that can point to an older neighborhood name as they were the center of consumer commerce in this area.

It’s easy to give it a new name. Most of the housing is north of Harrison Street. It’s difficult to figure out how many people live here because the block groups for this area include more than the area in question.

It’s easy to argue that because of the land uses, it really has no current identifiable “place” or pattern that attracts people. I’d like to know more about its history and, South Loop being a modern name, its previous names.

The rate of change on city streets: USA versus the Netherlands

ThinkBike 2013

One of the people in this photo is Dutch. We’re on the Dearborn bike route installed downtown in 2012. The next downtown protected bike route was installed in 2015 serving a different area. However, the Dearborn bike route has become so popular that it’s size and design (t’s a narrow, two-way lane) are insufficient for the demand (who knew that bicycling in a city center would be so high in demand, especially on a protected course?) and there are no plans to build a complementary facility to improve the conditions.

My friend Mark wrote the following paragraph on his blog, BICYCLE DUTCH, relating the need to change a city and its streets to the way families change the contents of essential parts of their homes. In other words, cities and streets are like our living rooms and they must also change as we change.

Think about your living room, chances are you change it completely every 15 to 20 years. Because you need a wider sofa for the expanding family, or because you rightfully think that table has had its best years. Maybe the extra big seat for granddad is sadly not needed anymore. Of course, things can’t always be perfect: you have a budget to consider and it is not so easy to change the walls. Replacing things does give you the opportunity to correct earlier mistakes and to get the things which are more useful now. While you are at it, you can also match the colours and materials better again. Our cities are not so different from our living rooms. Just as families grow and later decrease in size again when the children leave the house, the modal share of the different types of traffic users changes over the years. These shifting modal shares warrant changes to the street design. So you may need some extra space where it was not necessary before, but if you see less and less of a certain type of traffic, its space can be reallocated to other road users.

What I really want to talk about is the rate of change in the Netherlands. I’ve visited Mark’s home in s’Hertogenbosh (Den Bosch), and we’ve walked around Utrecht.

One thing he told me, which is widely evident, is that the Netherlands is always renewing its streets. Or it has been for decades (maybe since World War II). They update street design standards regularly and streets that no longer meet these designs (or a few generations back) are updated to meet them.

Now, the two changes – updating the standards and updating the streets – don’t happen so gloriously hand in hand. Just like in the United States it takes a couple of years to come up with the right design.

The difference between our two countries is the regularity in updating the designs, and the regularity in updating streets.

I’ll lead with one example in Chicago and ask that you tell me about projects in your city that repair what’s long been a pain in the ass.

An intersection in the Wicker Park neighborhood got modern traffic signals, added crosswalk signals (there had never been any), and a stupid, sometimes dangerous little island removed. One of the four legs didn’t have a marked crosswalk. The state of Illinois chipped in most of the cost of the update – this was known at least four years before the construction actually happened.

When I wrote a blog post about the project for Grid Chicago in 2012, I found a photo from 1959 that showed the intersection in the same configuration. I also wrote in that post that the construction was delayed from 2012 to 2013. Well, it got built in 2014.

Milwaukee & Wood ca. 1959

Intersections like this – with difficult-to-see traffic signals that motorist routinely blow past, missing crosswalks, and curb ramps that aren’t accessible – persist across Chicago in the state they’ve been in for 55 or more years.

The “reconstructed bicycle route” that Mark discusses and illustrates in his blog post is known to have been updated at least once a decade. He wrote, “pictures from 1980, 1998 and 2015 show how one such T-junction was changed several times. The protected intersection went through some stages, but having learned by trial and error, the design we see now is one that fits the present ‘family’ best.”

Three books by well-known city transportation planners have all been published within months of each other. I read and reviewed Sam Schwartz’s “Street Smart”, and I’m reading Janette Sadik-Khan’s “Street Fight“. Gabe Klein’s “Startup City” is the third. All of them advocate for new designs to match the changing attitudes and needs cities have. Actually, the needs of the cities haven’t really changed, but our attitudes and policies – and the politics – around how to update cities has evolved.

I don’t know what can spur all of these seemingly minor (they’re no Belmont Flyover) infrastructural updates. I don’t think a lack of money is to blame. I think a lack of coordination, staffing, and planning ensures that outdated and unsafe designs remain on city streets.

P.S. The Netherlands “renewal” attitude isn’t limited to streets. The Dutch national railway infrastructure company “ProRail” (which is “private” but owned by the government) has been completely replacing all of the primary train stations. The Dutch have been rebuilding dikes and building flood control projects for decades, many under the common name “Delta Works”.

Here’s a photo in Nijmegen where the government was building a new, bypass canal that would ease a shipping route, create a controlled flood area, a new recreation area, but that would also displace homes.

Easily find TIF districts in your ward but good data on their current obligations is missing

Ald. Ameya Pawar speaks to the Board of Education (WBEZ/Bill Healy)

Alder Ameya Pawar is willing to give back TIF money from projects in the 47th Ward to the Chicago Public Schools. Photo: Bill Healy for WBEZ

Alders Ameya Pawar (47th), Pat O’Connor (40th), Joe Moreno (1st) and Pat Dowell (3rd) are introducing a resolution at today’s budget committee to ask all alders to choose and stop certain TIF-funded projects in their wards (instructions on how to find TIF districts are below) so that the money can be declared as a surplus.

Part of the surplus would be given to the Chicago Public Schools, where it would have gone had property tax revenue never been diverted to the TIF.

What is TIF? Quick answer: All of the new property tax revenue generated after the date the “Tax Increment Financing” district took effect goes to a fund that can only be spent on certain kinds of projects within that district, while all of the property tax revenue generated at the amount that was collected just before the district took effect continues to go to the city, the school district, and other taxing districts.

Alder Pawar has already picked $16.5 million worth of projects that he’s stopping in order to give back the money to schools.

It’s still very difficult to know how much unallocated money is in a TIF district’s bank account (what is essentially surplus). It’s also still very difficult to figure out which projects have had money allocated to them (called an obligation) but not yet spent.

Patty Wetli reported in DNAinfo Chicago yesterday:

The resolution works as a companion to legislation [actually a resolution] previously introduced by Ald. Carlos Ramirez-Rosa (35th), which called for the city to funnel unallocated TIF dollars back to CPS. [read the resolution]

Rather than allowing Mayor Rahm Emanuel and his budget office to decide where to sweep for TIF surplus dollars, Pawar said aldermen should be leading the effort, stating which TIF projects they’re willing to give up.

Instructions to find TIF districts in your ward

You can use Chicago Cityscape’s Places maps to easily find which TIF districts overlap any of the 50 wards.

  1. Find your ward. Use the 3rd Ward, Alder Pat Dowell because Wetli already explored the 47th Ward TIF districts.
  2. Scroll down to the table called “3rd Ward, Ald. Pat Dowell’s Nearby Places”.
  3. Type “TIF district” in the table’s search form. Gasp at the fact that there are 17 districts that overlap the 3rd Ward.
TIF districts that overlap the 3rd Ward (Alder Dowell)

This screenshot shows 10 of the 17 TIF districts that overlap the 3rd Ward.

Let’s look deep at the TIF district called “24th/Michigan”, 76.7 percent of which is in the 3rd Ward, has several millions of dollars in obligations to vaguely-described projects, to continue paying for already-built projects, or future projects. This includes $6.4 million for the Cermak Green Line station and $4.5 million annually for an unspecified project at the National Teachers Academy pursuant to an intergovernmental agreement with the Chicago Public Schools.

24th/Michigan TIF district

A map of the 24th/Michigan TIF district.

The National Teachers Academy project isn’t even on the city’s mildly useful TIF projects map.

Alder Dowell has her work cut out for her to find projects that are in both the 3rd Ward and in one of the 17 intersecting TIF districts that she would be willing to cut so that the Chicago Public Schools are less broke. The same arduous but noble task belongs to all of the other alders as well.