On the Dutch forum<http://forum.openstreetmap.org/viewtopic.php?pid=394396#p394396>there is some discussion on how to tag a common situation. It is about a street that has no traffic sign on one end (side A) and a C6 sign <http://commons.wikimedia.org/wiki/File:Nederlands_verkeersbord_C6.svg>on the other end (side B) . Ofcoarse it is not allowed to enter this street by car from side B. If you enter the street by car from side A you are allowed to drive all the way. But you are even allowed to drive to (lets say) half way and then return. In other words... this is not a oneway street for motorcars. This makes the traffic sign a more or less imaginary oneway barrier.
Let's for simplicity's sake asume the implication of the sign is "motorcar=no", how should this be tagged? The direction of the OSM way is from A to B. The options that were mentioned on de forum were: 1 Cut the way where the sign is and use a relation type : restriction<http://wiki.openstreetmap.org/wiki/Relation:restriction>. 2 Add a node on the way where the sign is and add a motorcar:backward=no to this node. (similar to traffic_sign:forward<http://wiki.openstreetmap.org/wiki/Traffic_sign#As_part_of_a_way>on a node that is part of a way) 3 Cut the way where the sign is into a tiny piece of way. Add a motorcar:backward =no to this tiny piece of way. Cheers PeeWee32
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