Maptool does not propagate an osm 'bicycle=yes' tag if a 'vehicle' restriction exists.

[chr]

Hello,

in ​this area (51.207948 N, 6.973401 E), Willbecker Straße, streets are tagged (osm) vehicle=destination and ​bicycle=yes. Maptool does not propagate the permission for bicycles. Looking at osm.c I find, restrictions by vehicle= and motor_vehicle= tags do dominate any other setting.

My patch in the attachment solves the problem for me and hopefully for others too. It applies the following structure:

• tags of individual road users dominate 'motor_vehicle' (group) tags
• 'motor_vehicle' tags dominate 'vehicle' tags
• 'vehicle' tags dominate 'access' tags

Furthermore if tags occurs twice, once with a permission and once with a restriction:

• the permission overrules the restriction

(May be this case never happens, but a decision has to be made. This decision is not well rooted.)

Thanks for navit, Christian

[chr]

patch for flags evaluation, propagate bicycle permission against vehicle restriction

[usul]

There was a short note of user:Mapmaker towards your patch here: ​https://forum.navit-project.org/viewtopic.php?p=774#p774 (but please let's focus on discussions about that patch here)

[chr]

Repling to Mapmapper ​here. In my opinion the tags are long-winded but correct. The ranking of tags is described by this ​key hierarchy. Anyhow, the suggested tagging 'motor_vehicle=destination, bicycle=yes' is much more appropriate. And here is what maptool makes from 'motor_vehicle=destination, bicycle=yes'. All motor vehicles are banned from this road.

I did some more reading in the source code:

Maptool evaluates the value 'destination' equal to 'no'. There is one exception, the 'access' key. Maptool applies the AF_THROUGH_TRAFFIC_LIMIT on the 'access=destination' tag only. The AF_THROUGH_TRAFFIC_LIMIT flag operates on all road users that are not banned. Maptool requires a differentiated 'destination' value handling per road user.

[chr]

I did some more coding to get a clean bugfix. The attached patch has changes for maptool. The new binary map file contains through traffic flags per roaduser. Navit does a complete evaluation now. Maptool changed anyhow, thus the size-weight limits for truckers as well as the 'psv' key for taxi drivers are added too.

Navit with this patch should be able to read former map files.

[chr]

Minor fix of through-traffic_size-weight_psv.patch​. Do not use it. Please use the new patch file through-traffic_size-weight_psv.patch​2.

[chr]

Extended evaluation of access permissions.

[http://wiki.navit-project.org/index.php/user:jkoan]

This ticket was pushed back in order to bring 0.5.1 out soon.

[http://wiki.navit-project.org/index.php/user:jkoan]

Ticket retargeted after milestone closed