Thijs Niks made a web applet for calculating high-speed rail network ridership estimates. This is based on the gravity model that I’ve used to construct estimates. The applet lets one add gra…| Pedestrian Observations
David Schleicher has a proposal for how Congress can speed up infrastructure construction and reduce costs for megaprojects. Writing about what further research needs to be done, he distinguishes reasons from explanations. I have argued that many of the stories we tell about infrastructure costs involve explanations but not reasons. There are plenty of explanations […]| Pedestrian Observations
The greenhouse gases emitted by the production of concrete, called embodied carbon, are occasionally used as a green-NIMBY argument against building new things. A Berlin Green spokesperson coauthored a study opposing U-Bahn construction on the grounds that the concrete used in construction would raise emissions. More recently, I’ve seen American opponents of transit-oriented development in […]| Pedestrian Observations