One day of the Divvy bicycle-share system

Published on Mar 6, 2014
This video (best watched in high-definition (HD 720p)) shows all the bicycle trips made in one day in Chicago’s Divvy bicycle-share system, 2013. Each circle represents a Divvy bicycle station. Larger circles indicate a greater number of trips beginning and ending at that station. The color of the circle indicates the proportion of trip arrivals and departures: yellow means more arrivals, pink means more departures, and white means an equal mix of both. Watch the pattern of colors in the morning rush hour.

The number of arrivals and departures at each station was calculated for every five-minute interval of the day and was averaged over the number of days that the station was active in 2013.

This video was produced by Colin J Stewart (http://colinjstewart.com), an urban-planning graduate student at Transportation Research at McGill (TRAM: http://tram.mcgill.ca). Check out my previous video of Montreal’s public transit system: http://www.youtube.com/v/1ztMm5xmk3M?…

The music in this video (“The Koto Chill”) was written by Zircon (http://zirconmusic.com). If you like this track, check out his other work.

Data was provided by Divvy Bikes (http://divvybikes.com) as part of their 2014 data challenge. Big thanks to Divvy!

Study says Blue Line’s development impact is minimal | Star Tribune

Adam Belz in the Star Tribune writes: Study says Blue Line’s development impact is minimal, discussing a recent study by Sarah West and Needham Hurst of Macalester. I get quoted:

“My first sense is the Green Line is a better line,” said David Levinson, a civil engineering professor at the University of Minnesota. “It’s going to a denser area.”

Levinson said that the Green Line — and any subsequent additions to the light rail system — will also improve the value of land along the Blue Line, thus making it more ripe for development as the rail system grows and more people use it.

“That positive feedback system sort of kicks in, and it reinforces the growth,” Levinson said.