One of the reasons I developed my own bike friendly city ranking system was to provide a better measurement when comparing cities. Since the League of American Bicyclists (LAB) uses a nominal ranking (Platinum, Silver, Gold, Bronze), the difference in bike friendliness between cities of the same rank may be small or great. A numerical [...]
One of the reasons I developed my own bike friendly city ranking system was to provide a better measurement when comparing cities. Since the League of American Bicyclists (LAB) uses a nominal ranking (Platinum, Silver, Gold, Bronze), the difference in bike friendliness between cities of the same rank may be small or great. A numerical scoring system on a predictable and familiar scale will better highlight the distance of one city to another on achieve that city’s level of bike friendliness.
I created a method that would compare my ranking to LAB’s ranking and that was to find the variance (which isn’t the same as range) in scores in my ranking for each nominal level in LAB’s ranking. Platinum cities had a very high variance and Bronze cities had the lowest variance. Gold and Silver had swapped positions: Gold cities had a lower variance than Silver cities.
The beauty with creating your own bike friendly measurement system is that you can make the outcome order whatever you want.
In the days since, I’ve developed another bike friendliness measurement system, one that’s easier to understand, whose rankings are still relative to other cities, and that can be weighted. (I’m emphasizing the bike commute mode share.) It uses percentile scoring so all scores are positive but still based on the distribution of values. I’ve listed the scores for Method 1 (which uses a normalizing function based on mean and standard deviation) and Method 2 below.
League of American Bicyclists ranking
Method 1, standardize score
Method 2, percentile score
About Steven Can Plan
I started this blog in 2007 as the writing assignment for an introductory urban planning class at UIC. It's about cities (mainly Chicago), GIS oftentimes, and transportation (mainly bicycling). Learn more about me, Steven Vance. I also write for Streetsblog Chicago.
Steven Can Plan is hosted on Dreamhost.
Chicago Bike Map App
The Chicago Bike Map app is a bike and street map stored entirely in your iOS device – no data connection required. The map is designed to look much like the City of Chicago's official printed and online bike map. The app works on iPhone, iPod touch, and iPad.
Highly Recommended Bike Products
I've used this pannier to carry groceries, books, my laptop, clothing, anything. I like it because it's stylish (but also "normal" looking at the same time), stands up on its own, is extremely durable, and has the most universal attachment system: two hooks.
The best value taillight. It has three red LEDs that alternate and provide extreme brightness. I have two of these.
Joyride: Pedaling Toward A Healthier Planet by Mia Birk, With Joe (Metal Cowboy) Kurmaskie, Joe Kurmaskie, Jim Moore
I met Mia Birk in October 2011.
The Practice of Local Government Planning (Municipal Management Series) by
You could basically design and administer a new town kind of effectively after reading this huge and boring textbook.
The Death and Life of Great American Cities (50th Anniversary Edition) (Modern Library) by Jane Jacobs
Instant City: Life and Death in Karachi by Steve Inskeep
I reviewed this book that the publisher sent to me.