[OSM-talk] TAG-Suggestion: highway:trailer_shipment

[Felix Hartmann]

I think the main part that has to be done here is that ferries, or 
motorails however as well aerialways get connected to the main road 
network using lines (routing over polygons is so complicated that no 
router will soon master it in a useful way).

How they are connected should be dependant on the transport mode to use. 
Image huge ferries with different, but consistent places to enter.

We could have
highway=footway & pier=yes (or similar)for pedestrians entering the 
ferry (this is actually one of the rare cases I like to see footway and 
not path),
highway=service &  motorcycle=yes & foot=no & bicycle=yes
highway=service & access=no & motorcar=yes & hgv=yes

And the ferry route should connect all three.

Another example would be a cable_car.
We should have highway=footway (or another key) to connect the street 
network to the cable_car. If there are steps inside the building, well 
then lets add a section highway=steps......


The principle should be no matter what kind of line there is that can be 
used somehow, it should be interconnected with all other transport 
usable lines. This means that we should also connect railways to roads, 
because otherwise no autorouter can calculate routes using busses and 
trains (with walking from one to another) for example. Only airports I 
would rather just connect by having a relation list to which other 
airports you can get from airport XY.