Category: Transportation

Stats from the OECD: Comparing traffic injuries of the United States and Netherlands

May 21, 2012 / / 0 Comments

For an article I’m writing for Architect’s Newspaper about the Chicago Forward CDOT Action Agenda, I wanted to know about traffic injuries and fatalities in the United States, but compared to the Netherlands and Denmark and other places with a Vision Zero campaign (to have 0 traffic deaths each year).

I already knew the OECD had a good statistics database and web application. With a few clicks, I can quickly get a table of traffic injuries (casualties) listing just the countries I want. I can easily select the years I want, too.

In one more click the web application will show a time animated bar chart. A feature I’d like to see added is dividing the figure (in this case traffic injuries) by the population. Check out the video to see what it looks like. The United States looks to be in terrible shape, but our country has several times more residents.

I had trouble downloading and opening the CSV file of the data table I created. The XLS file was damaged, also. The built-in Mac OS X Archive Utility app couldn’t open the .gz file, but I used The Unarchiver app successfully.

My calculations, based on data from OECD (national population and traffic fatalities), Illinois Department of Transportation (IDOT), and the American Community Survey:

Fatalities per 100,000 in 2009

  • United States: 11.02472
  • Denmark: 5.48969
  • Netherlands: 4.35561
  • Sweden: 3.84988
  • Chicago: 16.74891
  • United Kingdom: 3.83555

Chicago’s fatality rate per 100,000 citizens in 2009 was 16.75 (473 deaths on the roads). The fatality rate dropped in 2010: just 11.65 deaths per 100,000 residents (315 deaths on the roads; the population also decreased).

Updated September 28, 2012, to add the United Kingdom. 

This is what transit stations should look like

May 20, 2012 / / 0 Comments

The CTA Morgan Green/Pink Lines station had a soft opening today. No press conference, no fanfare. I learned about the opening the night before on Twitter.

This station makes several strong statements: it clearly identifies the CTA as the organization that services this building, this operation, this monument to efficient transportation. The MORGAN STATION text tells you where you are, and you can read it from blocks away. And the artistic bike parking with a sufficient storage quantity says that the neighborhood will be biking here. Continue reading

Terminology debate: crash versus collision

May 18, 2012 / / 0 Comments

The following is an email conversation between myself and Travis Wittwer, a cool guy in Portland, Oregon, whom I stayed with in April 2010. We’ve had similar conversations before about the language writers (mainly newspaper article authors) use when speaking about and describing situations where “people and their bicycles make contact with people and their cars” (yes, there’s an easier way to say that, read on).

Travis: Continue reading

Slicing the crash data into interesting visualizations

May 17, 2012 / / 0 Comments

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

GM hired a transit rider to promote their Volt, I think

May 17, 2012 / / 0 Comments

A screenshot of the GM Chevy Volt ad I saw on Hulu. 

If you’re like me and most Americans, you probably see an advertisement for a car at least once a day. In an ad I watched on Hulu tonight, it appears GM filmed someone who takes buses and trains (or rides her bike) to sell people on the Chevy Volt.

The woman (the ad’s overlay text makes it seem like she’s a real owner) says, “I don’t event know what it’s like to stop and get gas” and “I am probably going to the gas station about once a month, probably less”.

With a car that only gets 35 MPG city, 40 MPG highway,* and has a range of 379 miles, she must be taking the bus for all those other trips she has to make each month! Or she walks to work each day and bikes to the grocery store on weekends. Or she just rarely leaves the house. But I don’t think the ad implies any of these things: instead it’s telling viewers that this automobile has amazing gas mileage (the ad never mentions it has an electric motor component).

The “average American” makes 3.79 trips per day with an average trip length of 9.75 miles. If this Volt driver was that average person, she would be driving 1,108.58 miles every 30 days. And her car doesn’t have that much range. It has a third of that.

She might have bad memory, though, about visiting gas stations.

The Toyota Prius, for comparison, gets 51 MPG city, 48 MPG highway,* and starts at $7,000 less.

* These are only estimates. The Chevy Volt gets 94 MPGe when running on purely the electric motors.

N.B. The Chevy Volt website shows a photo of the car in the position where it will spend most of the time: parked. I appreciate that accuracy!