Carnegie Mellon University industrial design students Jonathan Ota and Ethan Frier developed the Aura system that brings attention to bicyclists by lighting up their bike. The students incorporated six groups of three tri-colored LEDs attached to the rims of a bike. The lights are powered by a generator built into the front hub.

What is the fairest way of allocating road space? Photo by Li'l Wolf.

The number of gas stations in Manhattan, New York has decreased from 58 to 41 in the past two years. Photo by realname.

U.S. Department of Transportation Secretary Ray LaHood introduces the Urban Bikeway Design Guide. Photo by Ben Owen.

According to Transportation for America, pedestrians will always take the shortest and the most reasonable path, even if that means jaywalking. Photo by Gateway Streets.

Car Bike Rack. Photo via Cyclehoop.

Officials sign off on a Detroit light rail route, with hopes that it will contribute to commercial and residential revitalization. Photo by Ian Freimuth.

Japanese and U.S. companies team up on smart grid project in Maui, Hawaii. Photo by Marks Jonathan.

This interview is part of a bi-weekly series with sustainable transportation advocates, planners, engineers, journalists, sociologists, and other experts working to shed light on best practices and solutions from across the globe. We welcome ...