Yonah Freemark (of the Transport Politic, see my blogroll) posted a fantastic cumulative response to Edward Glaeser’s lackluster and academically dishonest essays on high speed rail at the Infrastructurist.  Freemark performed the first comprehensive analysis that incorporated real data.  He challenged Glaeser’s basic assumption and his calculations.  Here is the data Freemark used in pdf format.

Here are some of the highlights from Freemark’s insightful and devastating response to Glaeser.

Number of users

Glaeser argues that a Houston-Dallas line would be roughly one-half as popular, relative to population, as the current slow Amtrak service is in the Northeastern Corridor. His reasoning is that both Dallas and Houston are less transit-friendly areas, and therefore less conducive to train travel. So, assuming a 50 percent lower per capita ridership rate, he comes up with 1.5 million annual customers for the line – this is similar to the number of people who currently fly directly between the two cities.

There are a number of major flaws with this approach though. First, while transit-friendly conditions are desirable – and it bears mention that both Dallas and Houston are expanding their transit systems significantly – there is little evidence those networks are vital in attracting customers to high-speed rail.

Carbon Emissions

The reduction in carbon emissions from people choosing not to drive cars or fly airplanes would be quite significant – especially if the rail system is powered by renewable energy. These savings are particularly evident on the very short flights on this corridor, such as from College Station to Houston or from Waco to Dallas, which could be replaced entirely with rail service.

Glaeser argues the power plants that produce the electricity used by high-speed trains would produce significant carbon emissions, reducing the environmental gain from switching away from air or car travel.

Yet he fails to account for the green potential of an electric rail line: it can operate without releasing any carbon at all. California, which is developing a 220 mph line between San Francisco and Los Angeles, has pledged to run its trains with electricity obtained only from carbon-neutral sources, such as wind turbines and solar panels. Texas could make the same commitment and dramatically expand the environmental benefits of the high-speed system. Texas is uniquely positioned to build such facilities, too – its western and northern sections are sunny, windy, and sparsely populated.

Assumptions about where a line is built

Rather than looking at Glaeser’s hypothetical 240-mile rail line directly and exclusively between Dallas and Houston, I’ll base my argument on a line actually under consideration called the Texas T-Bone that would run roughly 300 miles between the cities, with intermediate stops at Waco, Temple, and College Stations. For simplicity’s sake, in this piece I’ll ignore the roughly 140-mile proposed extension of the line south to Austin and San Antonio but factor in connecting slow-speed trains from those locales.

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