Linklist: March 12, 2012

| 1 Comment

Modeled Behavior: Smart Speed Limits :

"Variable speed limits, in contrast, present a more flexible, even Hayekian, way of setting the speed limit. One example is Interestate 80 in Wyoming, where sensors detect driver speeds, which are then used in an algorithm, along with weather conditions and other factors, to set speed limits that vary. An interesting article, via Radley Balko, provides more information on this road"

Av Stop: Airline Passenger Travel To Nearly Double In Two Decades:

"FAA Aerospace Forecast Fiscal Years 2012-2032 projects RPMs will nearly double over the next two decades, from 815 billion in 2011 to 1.57 trillion in 2032, with an average increase of 3.2 percent per year. The number of commercial operations at FAA and contract towers is expected to increase by more than 45 percent from current levels."

[Is this with or without High-speed rail? Oh, that's right, it doesn't matter. Anyway, for some really interesting analysis of Airline data, see this presentation by Prof. R. John Hansman.]

Smithsonian: The Great New York-to-Paris Auto Race of 1908

Hennepin County Library on Tumbler (via AO) Twin City Lines Ad, March 1967 :

"Who knew that they would be headed for public ownership in less than 4 years?  The Fares vs. Wages chart looks especially unsustainable."

Brookings Institution: Transformative Investments in Infrastructure, Chicago Style:

"The CIT hits on most of the important elements of past infrastructure bank proposals. It’s a market-oriented institution that attracts private capital interested in steady returns and makes investment decisions based on merit and evidence rather than politics. Like California’s I-Bank it cuts across different types of infrastructure such as transportation and telecommunications, and like Connecticut’s Green Bank it emphasizes the generation, transmission, and adoption of alternative energy. The CIT also embraces advanced technologies to support next generation place-making by wiring low-income neighborhoods with broadband and developing high-tech research campuses."

1 Comment

I like the idea of variable speed limits. The causal effect of speed variance on crashes appears reasonable. That means adjusting the minimum speed limits as well as the maximum limits. Speed limits that adjust to weather and light conditions, traffic volumes, time of day, and the speed of the road users should command much more respect from users than apparently arbitrary speed limits. I'm old enough to remember when the national 55 mph speed limit was imposed, and high violation rates that went with it.

We live in a world where the knowledge component of everything we do is increasing rapidly. Speed limits and other road management efforts are just additional elements subject to this trend.

David Levinson

Network Reliability in Practice

Evolving Transportation Networks

Place and Plexus

The Transportation Experience

Access to Destinations

Assessing the Benefits and Costs of Intelligent Transportation Systems

Financing Transportation Networks

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This page contains a single entry by David Levinson published on March 12, 2012 10:28 AM.

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