Category: Illinois

A new freeway depreciates itself and the city as fast as your new car

A Metra train bypasses congested automobile traffic on the free-to-use Kennedy Expressway. 

Elly Blue wrote about automobile depreciation last week. Depreciation is the value of the automobile that disappears because it’s not as valuable anymore, for reasons of mechanical decay and the “used” factor.

Depreciation is, for many individual consumers a hidden cost. But any responsible accounting of the costs of driving includes it as one of the largest associated with car ownership. The fact that such a large and unprofitable investment is necessary to living and working in most areas of this country is a major source of poverty and failure to get ahead for people and families, and is a hidden source of poverty on a national scale.

The same exact principle is at work in our road system.

It’s depreciation at the societal level. It’s irresponsible not to plan for it, but we do not. A freeway, once built, immediately begins to deteriorate and become congested, it loses its ability to provide the jobs that often were much of the argument for building it in the first place.

Think about the Circle Interchange project the Illinois Department of Transportation is bent on building. For 10 minutes I monitored the “public forum” room at the late June – and final – public meeting about the project to rebuild and increase capacity at the intersection of I-290, I-90/94, and Congress Parkway. I heard seven people speak and at least five of them focused their two minute speeches on the “good jobs” that this project would provide. These are the same “good jobs” that $470 million spent on any other transportation project would generate, like the underfunded but highly beneficial CREATE project that reduces congestion and travel times for freight, Metra, and Amtrak trains in the region.

The Circle Interchange will add an imposing flyover to Greektown and residents and workers on Van Buren Street. 

Building something for jobs is the worst reason to build something. At least with transit (or tollways, for this matter) there is a recurring funding stream, with every use. Oregon is slowly moving in the direction of taxing drivers by mile instead of by gallon, but starting only with electric vehicles. Illinois is issuing bonds for its freeways with the country’s worst credit rating.

Elly’s article had me thinking of other ways cities lose. One of the commenters mentioned there is a loss in property taxes, when properties are demolished to make way for the highway. As Rick Risemberg wrote, “Roads themselves do not pay property tax, of course.” The revenue from those razed properties is eliminated, permanently.

This train flyover represents what the Circle Interchange flyover, over Halsted, will look like. At least this flyover has a revenue stream.

Another way cities lose property tax because of highways is that it makes properties around highways less valuable. It also makes existing, now vacant properties less desirable to developers. So, we have less revenue and then a lowered desire to develop there. Seems like a Catch-22.

However, urban rail stations and bikeways are now known to raise property values and thus government incomes, though this money generated by them is usually not allocated to the infrastructure that created it. (Some places are beginning to use “value capture” mechanisms to do so.)

Risemberg makes sure to point out that gas taxes hardly cover the costs of building highways. I would add that, at least in this state, more and more is being spent on debt service.

And this is all slightly relevant to the article I posted Tuesday on Streetsblog Chicago about transit-oriented development. It’s the third of three articles on the topic based on a report by the Center for Neighborhood Technology that essentially says that Chicagoland, compared to San Francisco, Boston, New York, and Philadelphia, are not experiencing the same benefits of them as adding housing to the transit shed (within 1/2 mile of a train station) and that driving is up in the transit shed of Chicagoland while transportation costs, as a portion of household income, are rising faster in the transit shed than outside. These were surprising to CNT, where the expectation was, in brief, that living near a train station provides more mobility, closer retail and services opportunities, and thus would reduce dependence on expensive automobile ownership.

Current madness of the week: investigating car crashes

Gravity should have prevented this car crash, as would not placing buildings near roadways. But we’ve figured out how to defy gravity. Photo by Katherine Hodges.

“Police closed the street to investigate”.

What a waste of time. The investigation will conclude the same way as any other, with one or more of the following contributing factors: exceeding the speed limit, alcohol, a deficiency in someone’s driving skills or knowledge, or some defect in the road (I’m excluding poor road design as it could almost always be better, designed in such a way to reduce the occurrence of poor quality driving).

The story: a person driving an SUV side swipes another SUV. The driver loses control and then hits the center concrete barrier. The SUV flips over and the driver dies. (Yes, this is in relation to an incident on I-294 in Glenview this weekend.)

We already know how to fix all of these issues.

How I created a map of Illinois Amtrak routes in TileMill in less than 30 minutes

This interactive map was created for a Grid Chicago article to show the cities and Amtrak routes mentioned. Click and drag it around or hover your mouse on the red train station markers. 

Want to create a map like that and publish it on your own website? It’s easy. I’ll show you how to do it in less than 30 minutes. First, download the following files:

All shapefiles are from the United States Department of Transportation, Bureau of Transportation Statistics’s National Transportation Atlas 2012 edition except for Illinois places, which comes from the Census Bureau’s TIGER project.

At the end of this tutorial, you’ll have a good introduction on how to find geographic data, build a map with TileMill, style the map, and publish it for the public. Your map will not look like mine as this tutorial doesn’t describe how to add labels or use the hover/info feature.

Tutorial to make Amtrak Illinois map

  1. Unzip the four ZIP files you downloaded and move their contents into a folder, like /Documents/GIS/Amtrak Illinois/shapefiles. This is your project folder.
  2. Install TileMill and open it.
  3. Set up a project. In the Projects pane, click “New Project”. In the filename field, title it “amtrak_illinois”. Ensure that the checkbox next to “Default data” is checked – this shows a world map and helps you get your bearings (but it’s not absolutely necessary).
  4. Get familiar with TileMill’s layout. Your new project will open with the map on the left side and your Carto style code on the right side. There are four buttons aligning the left edge of your map. From top to bottom they are: Templates, Font list, Carto guide, and Layers.
  5. Add a layer. We’re going to add the four shapefile layers you downloaded. Click the “Layers” button and then click “Add layer”. In the ID field, type in “amtrak_routes”. For Datasource, browse to your project folder and find “amtrak.shp” – this file has the Amtrak route lines. Then click “Done”. Click “Save & Style”.
  6. Style that layer. When you click “Save & Style” after adding a layer, your attention will be called to the Carto style code on the right side of TileMill. A section of code with the “amtrak_routes” #selector will have been inserted with some default colors and styles. If you know CSS, you will be familiar with how to change the Amtrak routes line styles. Change the “line-color” to “#000”. After “line-color”, add a new line and insert “line-opacity: 0.5;”. This will add some transparency to the line. Press the “Save” button above the code.
  7. Add remaining layers. Repeat Step 5 and add 3 more layers: “amtrk_sta.shp” (ID field: “amtrak_stations”), “state.shp” (ID field: “states”), and “tl_2012_17_place.shp” (ID field: “illinois_cities”).
  8. Hide bus stations. The Amtrak stations layer shows bus and ferry stations as part of Amtrak’s Thruway connections. You probably don’t want to show these. In your Carto style code, rename the #selector from “#amtrak_stations” to “#amtrak_stations[STNTYPE=’RAIL’]”. That makes the following style code only apply to stations with the “rail” type. Since there’s no style definition for things that aren’t of that type, they won’t appear.

Screenshot of my map.

Prepare your map for uploading

TileMill has many exporting options. You can save it as MBTiles and publish the map for free using MapBox (TileMill’s parent), or you can export it as image files (but it won’t be interactive), or you can display the map using the Leaflet JavaScript map library (which I use for the Chicago Bike Map app). This tutorial will explain how to export MBTiles and upload to MapBox, the server I’m using to display the map at the top of this page.

  1. Change project settings. To upload to MapBox, you’ll have to export your project as MBTiles, a proprietary format. Click the “Export” button above your Carto style code and click “MBTiles”. You’ll be asked to provide a name, description, attribution, and version. Input appropriate text for all but version.
  2. Adjust the zoom levels. Adjust the number of zoom levels you want (the more you have the longer it takes to export and upload your project, and you might exceed MapBox’s free 50 MB account limit). My map has zoom levels 8-11.
  3. Adjust the bounds. You’ll then want to draw your bounds: how much of the map’s geographic extents you want to export. Zoom to a level where you can see the entire state of Illinois in your map. Hold down the Shift key and drag a box around the state, plus a buffer (so viewers don’t fall of your map when they pan to the edges).
  4. Export your map. Click Export and watch the progress! On a four-year-old MacBook it took less than one minute to export the project.
  5. Bring the export to your project folder. When export finishes, click the “Save” button and browse to your project folder. Click the file browser’s save button.
  6. Upload to MapBox. Login to MapBox’s website and click “Upload Layer”. Browse to your project folder, select the .mbtiles folder, and click “Upload file”. Upon a successful upload, your map will display.
  7. Embed it in your website. Click the “Share” button in the upper left corner of your map and copy the embed code. Paste this into the HTML source code of a webpage (or in a WordPress post) and save that (I’m not going to provide instructions on how to do that).

Now you know how to find geographic data, build a custom map using the TileMill application, begin to understand how to style it, and embed your map for the public on a website or blog.

N.B. I was originally going to use QGIS to build a map and then publish a static image before I realized that TileMill + MapBox (the website) can build a map but publish an interactive feature instead of a static image. I’m happy I went that route. However, I did use QGIS to verify the data and even create a new shapefile of just a few of the key train stations on the Lincoln Service (the centerpiece of my Grid Chicago article).

Finding data about traffic and roads in Illinois

There are two good websites that provide information about roads, traffic, and their many attributes. One is provided by the Illinois Department of Transportation (IDOT) called Getting Around Illinois (GAI). The second is the Traffic Count Database System (TCDS).

Both provide Average Daily Traffic (ADT) counts with TCDS making the information easier to find and presents more of it.

The GAI map has an important layer: jurisdiction. With that information you can determine who has “ownership” of a road. Jurisdiction has been an important factor in the nearly year-long delay of the Jackson Boulevard protected bike lane segment from Ogden Avenue to Halsted Street. IDOT has jurisdiction over this segment (which continues east to Lake Shore Drive; the road is also known as Route 66) and is requiring that the Chicago Department of Transportation do more analysis and revise their designs.

If you are looking for ADT counts, I highly recommend TCDS as it uses the more familiar Google Maps and doesn’t require the Microsoft Silverlight plugin (which is slow and often denigrated with poor usability applications).

GAI has truck routes and crash information as well.

Slicing the crash data into interesting visualizations

The Chicago Crash Browser as it looks now. This only exists on my laptop and no place else. I can’t put it online because it’s so inefficient it would kill the server. 

I presented my Chicago Crash Browser to attendees of an OpenGov Hack Night three weeks ago and gathered a lot of feedback and some interest from designers and programmers there.

We collaboratively came up with a new direction: instead of focusing on creating a huge web application that I proposed, we (anyone who wants to help) would start small with a website and a couple of crash data visualizations. The visualizations would serve two purposes:

  • attract attention to the project
  • start building a gallery of data-oriented graphics that describes the breadth and extent of the crash data

Continue reading