2024-03-31

mindstalk: (science)

What is the most efficient transportation use of street space, e.g. in moving or serving people per hour? I've recently seen various infographics that had numbers, but no sources or calculations. Much better is this Urbanist article, which actually gives its assumptions and calculations. But I feel like doing my own estimates, though I will draw on that article, plus other research I've done. I'll mostly be analyzing a single 3-3.5 meter lane, in city conditions (lots of intersections, thus signalled to flow only half the time.)

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So, there you have it. Granting that in modern society, we'll have at least one car lane on our streets, it's still a valid question as to whether an additional lane should be used for car movement or something else. And in fact almost any other use, except car parking, can serve more people. Probably the easiest approach is to split a lane's worth of space between a bike path and a wider sidewalk, but a bus lane or light rail track would be good as well. If you have two lanes' worth of space, at least at strategic places for BRT stops, then you can have really high BRT capacity.

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July 2025

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