Hi Gerd,
I can't reproduce that in MapSource with r3160 and default style. I am always routed to the next junctions when using bicycle mode. In pedestrian mode I am routed through the barrier.
I see, I tested it with Lambertus OSM generic, mkgmap-r3116. Now with r3160 it is working as expected, bicycles dont pass the gate, excellent.
Well, for the link-pois-to-ways option mkgmap evaluates the access tags beginning with mkgmap: and the mkgmap:road-class and mkgmap:road-speed tags (including the min and max versions). If it finds an access tag, it checks if the POI is more restrictive than the way. If yes, a routing restriction is created. If it finds a tag like mkgmap:road-class or mkgmap:road-speed, it will use the corresponding values for a part of the way near the POI.
OK?
I tried it now with my OFM styles and this works too, so I think I got it :)