Introduction The Accessibility Observatory at the University of Minnesota is one of, if not the, leading center for the research and application of accessibility-based transportation system evaluation. They have harnessed the growth of big data in transportation, along with cloud computing resources, to conduct multiple groundbreaking accessibility studies that are unprecedented in scope. As part […]
The announcement by Uber that they will provide free time of day travel time data could be a game-changer for free and open routing and planning tools, such as Valhalla and Mapzen’s isochrone tool. These tools use GTFS schedule data as a decent surrogate for transit travel times, and calculate walk and bike times, but […]
Back in 2013, I authored an article on the value of accessibility, aka access to destinations, as a transportation performance metric. Accessibility basically measures the ability to access jobs, goods, or services in a community. While there are many formulations, a simple accessibility metric would be the number of jobs reachable by a 30 minute […]
There is considerable discussion and debate concerning the relationships between connected vehicle and automated vehicle technology. In an article from the fall 2015 edition of Thinking Highways magazine, I describe the results from a study of the interrelationships. A key take-away is that the two technologies have, in many ways, a synergistic relationship. Connectivity literally […]
The theme of the October 2015 issue of Thinking Highways magazine is data, and it includes a think piece I authored on open traffic data. In the few short weeks after I wrote the piece, there were a couple of interesting announcements on the topic. While not open to other parties, TomTom is partnering with […]
A significant portion of my work has been at the intersection of technical and policy issues. An example is my work on open data and open source policies for the USDOT’s ITS program. One artifact from that work is the Software Licensing Policy for the Open Source Application Development Portal (OSADP)
While at Noblis, my colleagues and I conducted two “Horizon Scans,” identifying and assessing the technical, institutional, commercial, and environmental trends that might positively or negatively affect ITS deployment over the long term. The purpose of the studies were to help the ITS JPO understand the range of opportunities and threats that may warrant further […]
Several images on the website are used under a Creative Commons license. These are: SeattleI5Skyline by Cacophony, used under Creative Commons Attribution-Share Alike 3.0 Unported license. Linear City-Scape from Gweb, used under Creative Commons Attribution 3.0 license. Santiago de Chile de noche by Javmoraga, used under Creative Commons Attribution-Share Alike 3.0 Unported license.