Relation checker doesn't accept role "main" and demands "<empty>" for route=hiking

[bartosomail@…]

What steps will reproduce the problem?

1. add a relation of recreational type, according to:

​https://wiki.openstreetmap.org/wiki/Roles_for_recreational_route_relations

with relations as members

2. assign to a member the role "main"
3. don't let any member without role

What is the expected result?

no warning is issued from validator

What happens instead?

Two warning of type "Role verification problem" are raised from the validator:

Role 'main' missing is not among expected values

Role '<empty>' missing

Please provide any additional information below. Attach a screenshot if possible.

Example of affected relation:
​https://www.openstreetmap.org/relation/2178755

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2021-04-09 01:24:26 +0200 (Fri, 09 Apr 2021)
Revision:17722
Build-Date:2021-04-09 01:30:57
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (17722 en_GB) Windows 10 64-Bit
OS Build number: Windows 10 Home 1909 (18363)
Memory Usage: 877 MB / 4068 MB (381 MB allocated, but free)
Java version: 11.0.2+9-LTS, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 3840×2160 (scaling 2.50×2.50)
Maximum Screen Size: 3840×2160
Best cursor sizes: 16×16→64×64, 32×32→64×64
System property file.encoding: Cp1252
System property sun.jnu.encoding: Cp1252
Dataset consistency test: No problems found

Plugins:
+ Mapillary (1.5.37.3)
+ QuickLabel (18)
+ SimplifyArea (35640)
+ apache-commons (35524)
+ apache-http (35589)
+ editgpx (35562)
+ ejml (35458)
+ geotools (35458)
+ javafx-windows (35655)
+ jna (35662)
+ jts (35458)
+ measurement (35640)
+ merge-overlap (35640)
+ photo_geotagging (35715)
+ photoadjust (35640)
+ reltoolbox (35640)
+ reverter (35688)
+ rex (53)
+ undelete (35640)

Tagging presets:
+ D:\OSM\JOSM\presets\cai_josm_preset-master\cai.xml
+ https://josm.openstreetmap.de/josmfile?page=Presets/Mountains&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/ParkingLanes&zip=1
+ https://raw.githubusercontent.com/yopaseopor/traffic_signs_preset_JOSM/master/CH.zip
+ https://raw.githubusercontent.com/yopaseopor/traffic_signs_preset_JOSM/master/IT.zip

Map paint styles:
+ https://josm.openstreetmap.de/josmfile?page=Styles/DestinationSignRelation&zip=1
+ https://raw.githubusercontent.com/species/josm-preset-traffic_sign_direction/master/direction.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/Osmc&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/MaxspeedIcons&zip=1
+ https://raw.githubusercontent.com/yopaseopor/traffic_signs_style_JOSM/master/Styles_Traffic_signs_EUR.zip
+ https://josm.openstreetmap.de/josmfile?page=Styles/ParkingLanes&zip=1

Last errors/warnings:
- 00056.137 E: Failed to locate image 'object--wire-group'
- 00056.262 E: Failed to locate image 'regulatory--dual-lanes-cyclists-and-pedestrians--g1'
- 00056.923 E: Failed to locate image 'regulatory--texts--g1'
- 00056.924 E: Failed to locate image 'regulatory--texts--g2'
- 00057.035 E: Failed to locate image 'void--car-mount'
- 00057.036 E: Failed to locate image 'void--dynamic'
- 00057.037 E: Failed to locate image 'void--ego-vehicle'
- 00057.038 E: Failed to locate image 'void--ground'
- 00057.040 E: Failed to locate image 'void--static'
- 00057.235 E: Failed to locate image 'warning--kangaroo-crossing--g1'

[simon04]

Not very common roles according to ​https://taginfo.openstreetmap.org/relations/route#roles (4000 for role:main)

Role:main is a rather new invention according to ​https://wiki.openstreetmap.org/w/index.php?title=Role:main&action=history

[skyper]

The new roles went through a proposal and are approved: ​Votes

Similar to #17661 and #18662 we need separate presets for different types of route relations. If there are objections I could create an external preset, first.

[skyper]

Adding main to the preset is little work but we should add a validator rule to check for at least one member with empty role or main and maybe warn about a mix of both. Regarding other transport modes where all new roles are missing so far we will need some more rules as for/backward is not allowed together with e.g. approach.

[skyper]

Just recently found the attribute regexp="" for <role /> which could be useful here.

[skyper]

Meanwhile, the recreational route's roles are present for hiking routes (where we do not use forward and backward) but they are missing for everything else, like route=bicycle or route=canoe.