Tag: Bicycling

Are protected bike lanes going in the right places?

September 29, 2011 / / 0 Comments
Bike crash map of Ogden, Milwaukee, Chicago

Common bike-car crash locations in West Town. The bottom blue circle identifies Ogden/Milwaukee, where there is a yellow trap for northbound, left-turning motorists (from Milwaukee to Ogden) that makes them run into southbound bicyclists who have a green light.

My contribution to a discussion on The Chainlink, Are protected bike lanes going in the right places?

Kelvin, Milwaukee/Ogden/Chicago is the intersection along Milwaukee Avenue with the highest number of bicycle crashes. I created this table and map to show them, using data from 2007-2009.

The blue rings on the map are called, in GIS parlance, “buffers” and are circles used to select things (in this case, bike crashes) within a certain distance of the circle center. In this map I used 50 feet radius buffers (100 feet diameter). While this distance encompasses the intersection from center to all four curbs, it doesn’t encompass the crashes that happened just outside the buffer that were still most likely influenced by the intersection (like drivers’ turning movements).

I am working on a project with three friends to create a better map and “crash browser”. I mentioned it in the last story on Grid Chicago in this post. For this project, we are using 200 feet radius (400 feet diameter) buffers to ensure we encompass the entire intersection and the area in which it still has an effect. This also grabs the bike lane “pinch points”, places where a bike lane doesn’t start until 100-200 feet beyond the intersection.

I am also concerned with the strategy and approach CDOT is using to choose locations. It’s not transparent; at MBAC, CDOT said they were choosing locations “without controversy and that could be implemented quickly”.

Read more about Kinzie Street, Chicago’s first protected bike lane, and my other thoughts on protected bike lanes. 

What is a utility bike

September 26, 2011 / / 0 Comments

Well, if I had to choose, it’s the WorkCycles Fr8.

But if I had to define it, here goes:

  1. It can carry stuff so that I don’t have to carry it on my person, thus hurting my body. Carries in such a way so as to not negatively affect the handling and maneuverability of the bike.
  2. Has a design with devices, features, elements, materials that help prolong the life of the bicycle. This includes chain guard to prevent rust, fenders to prevent dirt, internal gearing to make that last longer, etc…
  3. Can be ridden by a variety of person sizes (I’m not sure if this represents utility, not 100% sure on this one).

Why does this matter?

Photo by Jonathan Maus of BikePortland. Read his reporting on the topic. 

Oregon Manifest judges chose the winning bike on Friday, September 24, 2011, and it’s far from being the ultimate utility bike.

Tony’s bike – centered around an electric pedaling assist — was specifically designed to get people out of cars, introducing amenities that drivers have grown accustomed to on the road;  stereo, locking storage, stable loading and a huge dose of Fun Factor.

And I wasn’t the only concerned observer. Travis Wittwer, a Portland resident, was present at the announcement and wrote on Bike Noun Verb, in a post titled The Cargo Bike Future Sucks:

There was a palatable pause as the first place winner for the Ultimate Utilitarian Bike was announced at the the 2011 Oregon Manifest awards. The pause was long enough to register as a pause. A stop. It was uncomfortable. Clearly people everywhere in the crowd were saying, “What the hell?” I looked around and saw other people looking around. There was some confusion.

It doesn’t meet my definition of utility bike above:

  1. The wide front rack is mounted to the steering and thus will make maneuverability difficult. The double-leg kickstand is not very wide.
  2. The drivetrain is exposed, it uses electrical parts that will fail or need maintenance that many people will not be able to provide.
  3. The high top tube may make it difficult for some to mount the bicycle.
I do love the locking storage, though!

Notable about Chicago transit: Bikes

September 23, 2011 / / 0 Comments

I forgot where I heard this, but it’s from a guy named Adam (he might be from Ireland*):

Biking in Chicago is great… because you can give up and at any time… and put your bike on a bus.

He’s right – every single one of the Chicago Transit Authority’s 2,000+ buses have bike racks to hold two bicycles.

Photo by jochemberends. Visit the Bikes and Transit group on Flickr for more photos like this.

*My notes are vague.

Introduction to DIY bike ridership research

September 20, 2011 / / 0 Comments

A lot of people ask me how many people are out there bicycling.

“Not a lot”, I tell them.

And I explain why: the primary source of data is the American Community Survey, which is a questionnaire that asks people questions about how they got to work in a specific week. (More details on how it does this below.) We don’t have data, except in rare “Household Travel Surveys”, about trips by bike to school, shopping, and social activities.

It’s comparable across the country – you can get this data for any city.

Here’s how:

  1. Visit the “legacy” American FactFinder and select American Community Survey, operated by the United States Census Bureau.
  2. Select 2005-2009 American Community Survey 5-Year Estimates (or the latest 5-year estimate). This is the most accurate data.
  3. In the right-side menu that appears, click on “Enter a table number”.
  4. In the new window, input the table number ” S0801″ (“Commuting Characteristics by Sex”) and submit the form. The new window will close and the other window will go to that table.
  5. Now it’s time to select your geography. In the left-side menu, under “Change…” click on “geography (state, county, place…)”
  6. In the window to change your geography, select “Place” as your “Geographic Type”.
  7. Then select the state.
  8. Then select your city and click “Show Result”.
Notes:
  • This data shows all modes people take to work, who live in that city. It’s highly probable that people are leaving the city to their jobs on these modes. For example, someone who lives in Rogers Park may ride their bike to work in Evanston.
  • The URL is a permanent link to this dataset. Each city has a unique URL. You should save these as bookmarks so you can easily reference the data later.
  • The question on the survey doesn’t allow multiple choices: “People who used more than one means of transportation to get to work each day were asked to report the one used for the longest distance during the work trip”.