[mkgmap-dev] Some weird route results

Thu Apr 2 21:26:35 BST 2009

I encountered some strange things while testing routing using the maps 
built by Mkgmap-r991 on the GPSmap 60CSx and MapSource:

* A long bicycle route used a service ramp for busses to get on the 
motorway rather close to the starting point and stayed on the motorways 
until close to the endpoint. The service ramp is tagged:
highway=service
oneway=yes
access=no
psv=yes

* The same long bicycle route in MapSource was 200km long, did not use 
any motorways but made a huge detour in the first section of the route 
(going in the southeast direction instead of northeast) The latter part 
of the route was OK though. Yournavigation.org calculates a route 
between the same endpoints of about 120km.

This is the tested route: 
http://yournavigation.org/?flat=52.159151&flon=5.968067&tlat=52.995343&tlon=6.560551&v=bicycle&fast=1&layer=mapnik