From A to B
Like trying to cure obesity by loosening your belt
A sensitively tailored combination of modes
Induced demand
Choked by their own redundancy
51. Green Streets
Putting the streets to use
Roads to nowhere
A gradual refinement
The steel rail is an artifact whose form has been carefully optimized. This gradual refinement of the design was done not by a single brilliant engineer but by more than a century of industrial evolution. The rail was never meant to be an object of beauty, but its cross section has all the elegance of fine typography.
Hyperart: U.S. Rail
The steepest grade on U.S. main-line track is at the small town of Saluda, on a Norfolk Southern route between Spartanburg, South Carolina, and Asheville, North Carolina. The grade goes on for three miles at a slope of 4 or 5 percent. Trains have not been running on the line since 2001, but the tracks are still maintained.
Speaking people
Surely those who oversee and guide municipal transportation systems ought to use public transit during their work days. Why not put a clause to that effect in their job description or contract?
Requiring those whose work has a major impact on people's lives to experience some of the impact is really not too much ask. It means that they speak "people" rather than French, Cree, or Spanish.
Penn Station
In the same way that physical architecture can affect a mind, so too can software. Slower, less reliable software is like Penn Station: Sure, you can catch a transfer from one train to another but the dreary lowness of the place, the lack of sunlight or sensible wayfinding will make you feel like a rat, truculent and worthless, and worse: You’ll acclimate to that feeling and accept it as a norm.
Tokyo
Anatomical Drawings of Staircase Spaces
A Book by Tomoyuki TanakaWhy buses represent democracy in action
A Talk by Enrique PeñalosaAn advanced city is not one where even the poor use cars, but rather one where even the rich use public transport.
Snowpiercer
A FilmIn a future where a failed climate-change experiment has killed all life except for the lucky few who boarded the Snowpiercer, a train that travels around the globe, a new class system emerges.
Wang tiles
Wang tiles (Hao Wang, 1961) are a class of formal systems. They are modelled visually by square tiles with a color on each side. A set of such tiles is selected, and copies of the tiles are arranged side by side with matching colors, without rotating or reflecting them.
The basic question about a set of Wang tiles is whether it can tile the plane or not, i.e., whether an entire infinite plane can be filled this way. The next question is whether this can be done in a periodic pattern.
In 1966, Wang's student Robert Berger solved the problem in the negative. He proved that no algorithm for the problem can exist, by showing how to translate any Turing machine into a set of Wang tiles that tiles the plane if and only if the Turing machine does not halt. The undecidability of the halting problem then implies the undecidability of Wang's tiling problem.