Category Archives: Good/Interesting Studies

Metro-North-Everything Compatibility

The Regional Plan Association has a new study warning that Metro-North’s infrastructure is falling apart, and demands $3.6 billion in immediate spending on state of good repair. In general, my line on deferred maintenance is “you mean the agency deferred … Continue reading

Posted in Construction Costs, Good/Interesting Studies, High-Speed Rail, Incompetence, New York, Regional Rail, Shoddy Studies, Studies, Transportation | 40 Comments

Relative Costs of Transit Construction

The relative costs of different technologies of transit are not fixed. Although there are some rules of thumb for the ratio of tunneling cost to above-ground transit cost, the actual ratio depends on the city and project, and this would … Continue reading

Posted in Construction Costs, Good/Interesting Studies, Studies, Transportation, Urban Transit, Vancouver | 10 Comments

Are Forecasts Improving?

In response to my takedown of Reason, specifically my puzzlement at the estimates of inaccuracy in traffic forecasts, alert reader Morten Skou Nicolaisen sent me several papers on the subject. While there is past research about traffic shortfalls, for example … Continue reading

Posted in Construction Costs, Good/Interesting Studies, High-Speed Rail, Regional Rail, Studies, Transportation, Urban Transit | 15 Comments

The Rockaway Cutoff

When I went to an IRUM meeting nearly two years ago, the participants crowed about the possibility of restoring rail service on the Rockaway Cutoff. New York urban planner and technical activist David Krulewitch recently posted his proposal in a … Continue reading

Posted in Good/Interesting Studies, New York, Regional Rail, Studies, Transportation | 38 Comments

Transfer Penalty Followup

My previous post‘s invocation of Reinhard Clever’s lit review of transfer penalties was roundly criticized on Skyscraper City Page for failing to take into account special factors of the case study. Some of the criticism is just plain mad (people … Continue reading

Posted in Good/Interesting Studies, Regional Rail, Studies, Transportation, Urban Transit | 14 Comments

Congestion, Freeways, and Size, Redux

As a followup to my previous post about the TTI’s new congestion report, I finally did a multivariate regression analysis, with the dependent variable being cost and the independent variables being size and freeway lane-miles per capita. Such an analysis … Continue reading

Posted in Cars, Good/Interesting Studies, Studies, Transportation | 1 Comment

Congestion and Size

The Texas Transportation Institute has just released the latest version of its much-criticized Urban Mobility Report. Although the conclusions and recommendations made by the TTI tend to reflect its funding sources (APTA, American Road and Transportation Builders Association), the underlying … Continue reading

Posted in Cars, Good/Interesting Studies, Studies, Transportation | 23 Comments

Disappointment 2050

The political transit bloggers are talking about the new RPA/America 2050 report on high-speed rail published by the Lincoln Institute, which recommends a focus on the Northeast and California. Unfortunately, this is not an accurate description of the report. Although … Continue reading

Posted in Good/Interesting Studies, High-Speed Rail, Shoddy Studies, Studies, Transportation | 12 Comments

Quick Note: Comfort

While reading a thesis about tilting trains, I saw a comparison of passenger comfort on different modes of transportation. This includes the following graph (p. 30), which the thesis sources to a study of motion sickness in US children and … Continue reading

Posted in Good/Interesting Studies, Studies, Transportation | 6 Comments

Selective Application of Smeed’s Law

A few months ago, in response to the Raquel Nelson case, author Tom Vanderbilt found an FHWA study from 2005 that finds that on wide, busy roads, pedestrian death rates are higher on marked crosswalks than on unmarked ones. The … Continue reading

Posted in Cars, Good/Interesting Studies, Studies, Transportation | 29 Comments