this post was submitted on 28 Sep 2024
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Bloomington Indiana
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@pleaseclap @DemonHusky @bloomington_in I can’t see how any routes will become more direct for anyone, because no new more direct paths are being added.
Tagging a slow speed limit is a signal that cars may want to take a less direct route on streets with faster speed limits, while tagging a high speed limit is a signal for bike routing that cyclists may be less safe and may themselves prefer a less direct but safer route.
@markstos @DemonHusky @bloomington_in
What DemonHusky said:
A map app suggesting a route for a bike will try to minimize time via the slowest streets. For a car, it will try to minimize time via the fastest streets (which are usually more direct in terms of distance)
So if the algorithm suggesting a route thinks all streets are the same speed, bikes and cars will be suggested the same low-distance routes, which will usually be routes featuring excessive speeding by drivers
@markstos @DemonHusky @bloomington_in
Besides speed, there's probably also an "is there a bike lane" check, which would mitigate the problem a bit in places where the main roads mostly also have bike lanes
@pleaseclap @DemonHusky @bloomington_in That’s right. Many signals are involved. Some factor in cyclist aversion to hills for example.