Category: Cities

Stolen Bike Registry data: Which train stations have the most bike theft?

September 28, 2012 / / 0 Comments

If you can help it, don’t park your bike on the sidewalk under the tracks at the Clybourn Metra Station. Too many opportunities for theft here. 

The Stolen Bike Registry is a website created by Chicagoans for people to notify the community that their bike has been stolen. I make no claims to the accuracy or completeness (or anything) about this list or the dataset from which it was created. Because of less than optimal data collection practices, and a diversity of website users, the location information is difficult to comb through and present. I’ve used Google Refine to clean up some of the location data so that I can pick out the theft locations that represent CTA or Metra stations.

This is a list of the most reported bike theft locations that are CTA or Metra stations, from about June 13, 2006, to April 2, 2011, representing 1,740 bike theft reports*. It’s not known how many bike thefts were reported to the police because they don’t know.

CTA (13 stations)

Logan Square Blue Line CTA 8
Rockwell Brown Line CTA 5
Addison Brown Line CTA 2
Fullerton Red/Brown Line CTA 2
Paulina Brown Line CTA 2
Western & Milwaukee (Blue Line) CTA 2
Western Brown Line CTA 2
Addison Blue Line CTA 1
Chicago Brown Line CTA 1
Damen Blue Line CTA 1
Ashland Orange Line CTA  1
Cumberland Blue Line CTA 1
Wellington Brown Line CTA 1

The new bike racks at Clybourn Metra station are in a more visible spot. Maybe there’s even a security camera pointed at them some of the time. 

Metra (24 stations)

Clybourn Metra 19
Ravenswood Metra 18
Edgebrook Metra 4
Evanston Main Street Metra 2
Forest Glen Metra 2
Healy Metra 2
Lake Cook Metra 2
Ogilvie Metra 2
57th Street Metra 1
College Avenue Metra Train Station 1
Corner of Maple & Church in downtown Evanston, near Metra 1
Glenview Metra Station 1
Harlem Metra Station Berwyn, IL 1
Irving Park Metra Stop 1
Jefferson Park Metra 1
LaSalle Street Metra 1
Mayfair Metra 1
Metra Station at Davis Street, Evanston 1
Morton Grove Metra Station 1
Prairie Crossing Metra Station 1
Rogers Park Metra 1
Union Station Metra 1
Western Metra Station 1
Wilmette Metra 1

* Reports come from around the world. 10 dates have been excluded because their dates were anomalous, empty, or not possible.

Updated September 30 to correct a Metra station and combine it with another.

Beautiful renderings of what Bloomingdale Trail will look like in a decade

September 28, 2012 / / 0 Comments

The easiest place to get on the Bloomingdale Trail now will remain the easiest place. This access point will have three entry points, two of them are ramps. 

I say a decade because that’s how long it will take for all the plants and landscaping on the Bloomingdale Trail elevated park to look like how it appears in these fancy renderings by Michael Van Walkenburg & Associates.

Western Trailhead at Ridgeway Avenue pops up 10 feet above the trail level, over 20 feet above ground level. 

See all the photos from the meeting last Monday. Read my high praise for the project and the planning process on Grid Chicago.

The United States uses way too much text for regulatory traffic signs

September 19, 2012 / / 21 Comments

Look at these two signs in Berlin (right outside the American embassy). They’re universal across the European Union – and probably in adjacent non-EU countries. The upper one means “yield” and the lower one with the white arrow means “compulsory right turn”. In the United States, there are several signs that mean the same thing. The simplest one we have comes in two forms: symbol and text. That makes two different signs, but there’s a third one. It’s also a text sign but has extra words!

American symbol sign (actually a symbol with text): The sign has an arrow pointing in an upward curve toward the right and the word “only”. Photo by Joseph Dennis. 

Yet there is no need to mix a symbol and a word, as both parts of the message (“right turn” and “only maneuver you can make here”) can be communicated with symbols. In the EU, the right turn sign has two states, both depicted by symbols: off and on. Off meaning you cannot turn right there and is depicted with an arrow pointing right, on a white background, circumscribed with a red circle. The “on” version means you must turn right there and is depicted with an arrow pointing right, on a blue background. (It would be pointless to have a sign saying you can turn right somewhere.)

The next sign is the text-only version of the “right turn only” sign.

American text sign: The sign says “right turn only”. Photo by Michael Jantzen. 

And then there’s the most ridiculous one, “right lane must turn right”. In many places, Chicago included, bikes and buses are excepted.

A group of people protest the stupidity of this sign design. I mean, a bunch of Tea Partiers protest our socialist road system. Or something. Photo by Susan Adams. 

All of the signs depicted above mean the same thing! Why have we developed four unique ways to communicate a single meaning?

While I’m on the subject of right turns, here’re two signs in San Francisco, on Market Street at Octavia Boulevard. Octavia is the end of the Central Freeway, so people driving here are in the mindset of fast highway driving. Cars cannot be turned right here and bicyclists are warned to look out for people making illegal right turns. In other words, “Beware car drivers who break the law”.

Photo of “right turn prohibited” symbol sign and “[bikes] watch for prohibited right turns” text sign by Adam Fritzler. 

Reverse traffic planning

September 3, 2012 / / 0 Comments

Nothing revolutionary, just a clever design. It’s a t-shirt worn by Bicycle Innovation Lab co-founder Lasse Schelde in Copenhagen. I met Lasse at the Svagerløb Danish Cargo Bike Championships on August 18, 2012 (see all photos). The graphic is an upside-down pyramid. From the top it moves to the bottom with decreasing area as follows:

  • Walking
  • Cycling
  • Utility Bicycles
  • Public Transport
  • Taxi/Transport
  • Car Sharing
  • Own Car
  • Airplane

There are many ways to interpret this graphic, but I see it as one of decreasing efficiency in moving people (disregarding nuances of population and distance).

A photo of me cycling in the team relay race on the world’s fastest cargo bike. 

Lasse and I were on the same team for the relay race. Miche and Brandon Gobel all rode his Bullitt. I started first so I wouldn’t have to carry any of the luggage (which consisted of two car tires and a wooden Carlsberg beer crate). The race was hosted on the Carlsberg brewery lot.

How to split a bike lane in two and copy features with QGIS

July 13, 2012 / / 0 Comments

A screenshot of the splash image seen on users with iPad retina displays in landscape mode. 

To make the Chicago Offline Bike Map, I need bikeways data. I got this from the City of Chicago’s data portal, in GIS shapefile format. It has a good attribute table listing the name of the street the bikeway is on and the bikeway’s class (see below). After several bike lanes had been installed, I asked the City’s data portal operators for an updated shapefile. I got it a month later and found that it wasn’t up-to-date. I probably could have received a shapefile with the current bikeway installations marked, but I didn’t have time to wait: every day delayed was one more day I couldn’t promote my app; I make 70 cents per sale.

Since the bikeway lines were already there, I could simply reclassify the sections that had been changed to an upgraded form of bikeway (for example, Wabash Avenue went from a door zone-style bike lane to a buffered bike lane in 2011). I tried to do this but ran into trouble when the line segment was longer than the bikeway segment that needed to be reclassified (for example, Elston Avenue has varying classifications from Milwaukee Avenue to North Avenue that didn’t match the line segments for that street). I had to divide the bikeway into shorter segments and reclassify them individually.

Enter the Split Features tool. QGIS is short on documentation and I had trouble using this feature. I eventually found the trick after a search that took more time than I expected. Here’s how to cut a line:

  1. Select the line using one of the selection tools. I prefer the default one, Select Features, where you have to click on the feature one-by-one. (It’s not required that you select the line, but doing so will ensure you only cut the selected line. If you don’t select the line, you can cut many lines in one go.)
  2. Toggle editing on the layer that contains the line you want to cut.
  3. Click Edit>Split Features to activate that tool, or find its icon in one the toolbars (which may or may not be shown).
  4. Click once near where you want to split the line.
  5. Move the cursor across the line you want to split, in the desired split location.
  6. When the red line indicating your split is where you desire, press the right-click mouse button.

Your line segment has now been split. A new entry has been added to the attribute table. There are now two entries with duplicate attributes representing that together make up the original line segment, before you split it.

This screenshot shows a red line across a road. The red line indicates where the road will be split. Press the right-click mouse button to tell QGIS to “split now”.

After splitting, open the attribute table to see that you now have two features with identical attributes. 

Copying features in QGIS

A second issue I had when creating new bikeways data was when a bikeway didn’t exist and I couldn’t reclassify it. This was the case on Franklin Boulevard: no bikeway had ever been installed there. I solved this problem by copying the relevant street segments from the Transportation (roads) shapefile and pasted them into the bikeways shapefile. New entries were created in the attribute table but with blank attributes. It was simple to fill in the street name, class, and extents.

Chicago bikeways GIS description

Bikeway classes (TYPE in the dataset) in the City of Chicago data portal are:

  1. Existing bike lane
  2. Existing marked shared lane
  3. Proposed on-street bikeway
  4. Recommended bike route
  5. Existing trail
  6. Proposed off-street trail
  7. Access path (to existing trail)
  8. Existing cycle track (also known as protected bike lane)
  9. Existing buffered bike lane

It remains to be seen if the City will identify the “enhanced marked shared lane” on Wells Street between Wacker Drive and Van Buren street differently than “existing marked shared lane” in the data.