Allow to route through highway=construction

[Kacper Golinski]

In some usecases it would be useful to treat highway=construction as accessible roads.

For example, I could use map matching API to snap some older GPX track and get OSM informations. This would allow to maintain original GPX geometry without avoiding roads under construction.

By default highway=construction shouldn't be accessible but there should be an option to change that with custom profile.

link to the forum discussion

[Peter]

Would be adding CONSTRUCTION to RoadClass sufficient for your use case?

[Kacper Golinski]

@karussell I think it's not enough. I had to add "construction" to allowedHighways here.

But then construction ways are included by default so they would have to be de-prioritized by default somehwere.

[Peter]

Did you try the custom model I suggested:

{
  "priority":[
    { "if": "road_class != CONSTRUCTION", "multiply_by": "bike_priority" },
    { "if": "road_class == CONSTRUCTION", "multiply_by": "1" },
    { "else_if": "!bike_access && (!backward_bike_access || roundabout)", "multiply_by": "0" },
    { "else_if": "!bike_access && backward_bike_access", "multiply_by": "0.2" }
  ]
}

without the change to the source code in BikeCommonAccessParser.java?

[Kacper Golinski]

@karussell without changing BikeCommonAccessParser.java it's not working.

After adding changing BikeCommonAccessParser:

[Peter]

Can you share the custom model you used? Please note that the custom model must be used on the server-side (otherwise it won't work here but also not for map matching)

[Kacper Golinski]

@karussell Your custom model worked server side! I need to read more about client vs server side models.

Open PR with adding CONSTRUCTION TO RoadClass?

[Peter]

Basically with a client-side model you are adding more statements to the existing list of the server-side model (priority and speed sections separately) and so you currently cannot "unblock" roads that are blocked via the server-side model. Furthermore map matching, isochrone and spt endpoints only work with server-side models.

Open PR with adding CONSTRUCTION TO RoadClass?

👍

[Kacper Golinski]

Thanks for the explanation. I'll prepare the PR shortly.