Mark, I think the following could be what happens. The GPS unit tries to route you to $dest, which is on a non accessible road. As "non accessible" has no access, it makes no sense trying other directions. If there's a crossing, that's a reason to try other directions so the oneway street will come up. I was thinking: are the oneway street and the fake route interconnected automatically? I know they share the nodes, is that the same as being able to skip between them? I.e. is it: | | +--+--------+-----+----+---- a street +--+--------+-----+----+---- a street (cycleway) | | ... or | | +--.--------.-----+----.---- a street +--.--------.-----+----.---- a street (cycleway) | | ? Valentijn -- Durgerdamstraat 29, 1507 JL Zaandam; telefoon 075-7074579