itsleeds / itsleeds/trafficsim

R5 routing

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Dominant language
R
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Description

Using `library(r5r)` we can get some very rapid routing. I will test the timing of this compared to OSRM. However the quality of the routing does seem to be a bit questionable. Here are some examples where the routing is using paths that don't seem to be suitable to motor vehicles, and routes that are clearly not the fastest. OSRM doesn't give these routes.

Clearly a diversion:
![r5 routing](https://user-images.githubusercontent.com/52210872/207392397-cb64f870-96c1-46cf-a6a9-ec84b3e8c766.jpg)

Not a road:
![r5 example 3](https://user-images.githubusercontent.com/52210872/207392403-c29d2d59-2bf9-4f26-b7eb-fed4f74eebdd.jpg)

Not a road:
![r5 example 2](https://user-images.githubusercontent.com/52210872/207392412-26ba6fa6-466b-49f7-ad80-ce53805016ae.jpg)

Contributor guide

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Research direction

Start by reproducing the examples with library(r5r) and compare the resulting routes with OSRM, using the linked screenshots as reference. Determine why r5r selects unsuitable or slower paths; done means the routing behavior is explained and a specific correction is identified.

Written by the indexing model from the issue text.

Assessment

Tech stack
r
Domain
backend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
28/100

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