highway.service has very limited permissions

[behrisch]

According to the OSM wiki https://wiki.openstreetmap.org/wiki/Tag:highway%3Dservice these streets are not different permission wise.

[namdre]

There are some negative side effects of expanding permissions:

• the size of the passenger car routing graph grows by ~30% in a typical network
• the junction joining heuristic (which makes use of vClass rather than edge type) degrades at complex node clusters with adjacent service roads
• invalid access: a cursory check revales that not all service roads are actually routable (bollards which prevent access may be defined in OSM but are not imported at the moment #6148 )

I suggest we do not change the default at this time (Someone who needs it can easily substitute a custom typemap).

[behrisch]

I would vote then for not importing them at all by default. But importing with a reduced permission set which does not seem to be backed by what OSM means with this type looks strange to me.

[behrisch]

It just bit me again. Roads such as https://www.openstreetmap.org/way/376556836 and https://www.openstreetmap.org/way/54622157 connect "full size roads" to the rest of the net and apparently TAPAS wants to use them. Can we maybe invent an option which at least "upgrades" such connecting roads. This may deserve a separate issue but I would also love to solve this issue here at the same time. @namdre ideas?

[namdre]

Yes. I think it makes sense to keep these roads if they connect components that would otherwise be disconnected. However, this is still tricky: Not every service road with non-service roads on both ends is necessary and the condition is likely not sufficient either (but it would be very cheap). A graph theoretical analysis of connectedness would be expensive and not provide a unique solution. But if you want to implement something along those lines (maybe heuristic) go ahead.

[namdre]

Interestingly, the road https://www.openstreetmap.org/way/54622157 has type "service" and there is a gate at one end whereas https://www.openstreetmap.org/way/376556836 has sub-type driveway (<tag k="service" v="driveway"/>) Then there is the access tag <tag k="access" v="permissive"/> for the road with the gate and <tag k="access" v="private"/> for the driveway.

[behrisch]

I would go for the "non-service on both ends" solution and see how much it adds to the net. Should this be a command line option or an additional attribute in the typemap (I prefer the latter)?

[namdre]

Typemap attributes should reasonably be applicable to more than one type. Not sure if this is the case here. My gut feeling would be to make this into an --osm.something option.

[alexrsanchez]

Hello, I just found myself with this same problem: my public transport network does not work properly because of all the restrictions of highway.service (most of urban buses use this type of road), so I have to change it manually and it is quite tedious work. I think adding a --osm.something option that would allow change permissions of highway.service -as I think @namdre proposes- would be really helpful!

[namdre]

@alexrsanchez In your case, the simplest solution would be to load a custom typemap with

<type id="highway.service"        numLanes="1" speed="5.56"  priority="1"  oneway="false" allow="delivery pedestrian bicycle bus"/>

see https://sumo.dlr.de/docs/Networks/Import/OpenStreetMap.html#recommended_typemaps Also, you can change the permissions of all roads at once using netedit. (similar example is https://sumo.dlr.de/docs/Netedit/neteditUsageExamples.html#correcting_road_access_permissions but you can select edges by type instead).

[alexrsanchez]

That is certainly a simple solution, didn't think about modify the typemap... Thanks a lot!

[behrisch]

Nevertheless I think we should adopt permissions for streets which actually have busses driving on them. @namdre Shouldn't have #3437 fixed that? @alexrsanchez Did you use --ptline-output when converting the net?

[namdre]

Yes. #3437 should have fixed this.

[alexrsanchez]

Nevertheless I think we should adopt permissions for streets which actually have busses driving on them. @namdre Shouldn't have #3437 fixed that? @alexrsanchez Did you use --ptline-output when converting the net?

Yes, I use the --ptline-output when converting the net and then use the output file in pt2flows.py. So far, the only solution that worked for me was to load a custom typemap as @namdre proposed. Though I have to note that I'm using quite an old version of SUMO (v1.1)

Sorry it took me that long to reply!

[behrisch]

Ok that explains it #3437 has been solved after 1.1