Somehow the patch is putting out quite a bit stuff that seems fine even set to 10 - I did find one way that breaks routing on device though

http://www.openstreetmap.org/browse/way/310376420

Something is really strange here - the problematic section is the bridge to the East, and with ID I cannot properly select it.

Problematic tile: https://openmtbmap.org/63670040.img

Routing over it on my Oregon 600 in simulation mode - it get's stuck as soon as it reaches the bridge.

I have now changed my style, before if a route contained a bridge, there was supposed to be no extra routable line created for the bridge, this did not work in all cases due to the discussed bug. I changed my style to create no extra routable line for a bridge if part of a relation, but this did not work either, I'm still ending up with 8 routable lines instead of 3 for the bridge itself. Very strange.

In general I think quite often it is adjoining ways that are more likely to be problematic. Not so easy what to do with all this long list as often it did not create more than 2-3 routable lines. The most were 8 (linked above). I'm now trying to see what it gives for my changed style. I did go through my style, and without this bug the style should create no more than 4 routable lines at most for a single street (yes this does not solve if there are two streets that get put on top of each other, because of super detailed mapping). However as in the above linked example that was not the case.

This is a case where in OSM there is already overlapping data - I'll give it a better check tomorrow:

https://www.openstreetmap.org/way/358035804#map=16/44.5885/7.8644

SEVERE (RouteNode): E:\openmtbmap\maps\63670018.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 41.099468,14.210138 when routing to 177░ (http://www.openstreetmap.org/browse/way/231702644)

SEVERE (RouteNode): E:\openmtbmap\maps\63670040.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.594210,7.870896 when routing to 166░ (http://www.openstreetmap.org/browse/way/268949386)

SEVERE (RouteNode): E:\openmtbmap\maps\63670040.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.594024,7.870959 when routing to 347░ (http://www.openstreetmap.org/browse/way/268949386)

SEVERE (RouteNode): E:\openmtbmap\maps\63670040.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.589474,7.868189 when routing to 230░ (http://www.openstreetmap.org/browse/way/358035804)

SEVERE (RouteNode): E:\openmtbmap\maps\63670040.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.595358,7.869657 when routing to 186░ (http://www.openstreetmap.org/browse/way/358035804)

SEVERE (RouteNode): E:\openmtbmap\maps\63670040.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.593348,7.870952 when routing to 7░ (http://www.openstreetmap.org/browse/way/268949386)

SEVERE (RouteNode): E:\openmtbmap\maps\63670040.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.528092,7.857529 when routing to 132░ (http://www.openstreetmap.org/browse/way/310376420)

SEVERE (RouteNode): E:\openmtbmap\maps\63670040.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.527925,7.857784 when routing to 313░ (http://www.openstreetmap.org/browse/way/310376420)

SEVERE (RouteNode): E:\openmtbmap\maps\63670035.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.103926,10.499103 when routing to 12░ (http://www.openstreetmap.org/browse/way/261283126)

SEVERE (RouteNode): E:\openmtbmap\maps\63670036.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.197738,9.560527 when routing to 306░ (http://www.openstreetmap.org/browse/way/216391711)

SEVERE (RouteNode): E:\openmtbmap\maps\63670034.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 43.462818,10.589772 when routing to 260░ (http://www.openstreetmap.org/browse/way/131304170)

SEVERE (RouteNode): E:\openmtbmap\maps\63670054.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 45.658185,10.045777 when routing to 46░ (http://www.openstreetmap.org/browse/way/50847847)

SEVERE (RouteNode): E:\openmtbmap\maps\63670057.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 46.171695,9.870816 when routing to 327░ (http://www.openstreetmap.org/browse/way/503763128)

SEVERE (RouteNode): E:\openmtbmap\maps\63670059.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 45.690630,9.675076 when routing to 248░ (http://www.openstreetmap.org/browse/way/50730378)

SEVERE (RouteNode): E:\openmtbmap\maps\63670067.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 45.142950,9.170384 when routing to 85░ (http://www.openstreetmap.org/browse/way/243855717)

SEVERE (RouteNode): E:\openmtbmap\maps\63670066.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 45.488240,9.195559 when routing to 201░ (http://www.openstreetmap.org/browse/way/262420957)

SEVERE (RouteNode): E:\openmtbmap\maps\63670066.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 45.488326,9.195591 when routing to 195░ (http://www.openstreetmap.org/browse/way/262420957)

SEVERE (RouteNode): E:\openmtbmap\maps\63670070.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 45.586536,8.924042 when routing to 235░ (http://www.openstreetmap.org/browse/way/450869558)

SEVERE (RouteNode): E:\openmtbmap\maps\63670072.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 45.598025,13.786274 when routing to 68░ (http://www.openstreetmap.org/browse/way/26661412)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.736224,12.736811 when routing to 94░ (http://www.openstreetmap.org/browse/way/444595723)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.736221,12.736862 when routing to 275░ (http://www.openstreetmap.org/browse/way/444595723)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.733896,12.733320 when routing to 145░ (http://www.openstreetmap.org/browse/way/166104158)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.733569,12.733668 when routing to 325░ (http://www.openstreetmap.org/browse/way/166104158)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.735211,12.734411 when routing to 19░ (http://www.openstreetmap.org/browse/way/115921194)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.735631,12.734614 when routing to 19░ (http://www.openstreetmap.org/browse/way/115921194)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.737543,12.738809 when routing to 348░ (http://www.openstreetmap.org/browse/way/205144591)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.991118,12.671455 when routing to 176░ (http://www.openstreetmap.org/browse/way/226058688)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.990426,12.671494 when routing to 0░ (http://www.openstreetmap.org/browse/way/226058688)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.733015,12.737255 when routing to 48░ (http://www.openstreetmap.org/browse/way/394187014)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.737876,12.738618 when routing to 155░ (http://www.openstreetmap.org/browse/way/205144591)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.735138,12.735350 when routing to 19░ (http://www.openstreetmap.org/browse/way/524788388)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.736208,12.736964 when routing to 280░ (http://www.openstreetmap.org/browse/way/444595723)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.736087,12.737346 when routing to 306░ (http://www.openstreetmap.org/browse/way/166123198)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.735055,12.734571 when routing to 289░ (http://www.openstreetmap.org/browse/way/115921194)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.735651,12.736162 when routing to 307░ (http://www.openstreetmap.org/browse/way/166104131)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.737428,12.738789 when routing to 13░ (http://www.openstreetmap.org/browse/way/205144591)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.738709,12.740727 when routing to 340░ (http://www.openstreetmap.org/browse/way/205131584)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.989677,12.671807 when routing to 149░ (http://www.openstreetmap.org/browse/way/77223727)

SEVERE (RouteNode): E:\openmtbmap\maps\63670076.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.930978,13.089920 when routing to 3░ (http://www.openstreetmap.org/browse/way/67628358)

SEVERE (RouteNode): E:\openmtbmap\maps\63670077.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.535039,12.757507 when routing to 288░ (http://www.openstreetmap.org/browse/way/62229017)

SEVERE (RouteNode): E:\openmtbmap\maps\63670077.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.534998,12.757686 when routing to 288░ (http://www.openstreetmap.org/browse/way/62229017)

SEVERE (RouteNode): E:\openmtbmap\maps\63670080.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 46.065012,13.246466 when routing to 159░ (http://www.openstreetmap.org/browse/way/526738082)

SEVERE (RouteNode): E:\openmtbmap\maps\63670080.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 46.063818,13.247116 when routing to 160░ (http://www.openstreetmap.org/browse/way/526738082)

SEVERE (RouteNode): E:\openmtbmap\maps\63670080.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 46.063818,13.247116 when routing to 340░ (http://www.openstreetmap.org/browse/way/526738082)

SEVERE (RouteNode): E:\openmtbmap\maps\63670080.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 46.062397,13.247571 when routing to 352░ (http://www.openstreetmap.org/browse/way/526738082)

SEVERE (RouteNode): E:\openmtbmap\maps\63670080.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 46.066478,13.245662 when routing to 159░ (http://www.openstreetmap.org/browse/way/526738082)

SEVERE (RouteNode): E:\openmtbmap\maps\63670083.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 45.480502,12.573502 when routing to 57░ (http://www.openstreetmap.org/browse/way/296891396)

SEVERE (RouteNode): E:\openmtbmap\maps\63670083.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 45.479995,12.572592 when routing to 51░ (http://www.openstreetmap.org/browse/way/296891396)

SEVERE (RouteNode): E:\openmtbmap\maps\63670093.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 43.423061,11.122175 when routing to 246░ (http://www.openstreetmap.org/browse/way/109792923)

SEVERE (RouteNode): E:\openmtbmap\maps\63670090.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.576464,11.368615 when routing to 287░ (http://www.openstreetmap.org/browse/way/289500850)

SEVERE (RouteNode): E:\openmtbmap\maps\63670093.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 43.423083,11.122244 when routing to 246░ (http://www.openstreetmap.org/browse/way/109792923)

SEVERE (RouteNode): E:\openmtbmap\maps\63670092.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.647965,10.934005 when routing to 210░ (http://www.openstreetmap.org/browse/way/184765377)

SEVERE (RouteNode): E:\openmtbmap\maps\63670092.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.641820,10.923750 when routing to 18░ (http://www.openstreetmap.org/browse/way/184119527)

SEVERE (RouteNode): E:\openmtbmap\maps\63670096.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 43.111527,12.391685 when routing to 318░ (http://www.openstreetmap.org/browse/way/23079043)

SEVERE (RouteNode): E:\openmtbmap\maps\63670096.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 43.453887,12.236974 when routing to 338░ (http://www.openstreetmap.org/browse/way/134104701)

SEVERE (RouteNode): E:\openmtbmap\maps\63670096.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 43.455952,12.237370 when routing to 241░ (http://www.openstreetmap.org/browse/way/134104701)

SEVERE (RouteNode): E:\openmtbmap\maps\63670096.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 43.572849,12.138348 when routing to 102░ (http://www.openstreetmap.org/browse/way/49245384)

SEVERE (RouteNode): E:\openmtbmap\maps\63670096.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 43.111334,12.391722 when routing to 345░ (http://www.openstreetmap.org/browse/way/23079043)

SEVERE (RouteNode): E:\openmtbmap\maps\63670097.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 42.419061,12.106760 when routing to 18░ (http://www.openstreetmap.org/browse/way/94916749)

SEVERE (RouteNode): E:\openmtbmap\maps\63670101.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.839517,11.616697 when routing to 304░ (http://www.openstreetmap.org/browse/way/23867528)

SEVERE (RouteNode): E:\openmtbmap\maps\63670101.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.839494,11.616747 when routing to 304░ (http://www.openstreetmap.org/browse/way/23867528)

SEVERE (RouteNode): E:\openmtbmap\maps\63670101.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.840777,11.614020 when routing to 305░ (http://www.openstreetmap.org/browse/way/23867528)

SEVERE (RouteNode): E:\openmtbmap\maps\63670101.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.836746,11.619784 when routing to 203░ (http://www.openstreetmap.org/browse/way/109082692)

SEVERE (RouteNode): E:\openmtbmap\maps\63670101.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 44.839148,11.617493 when routing to 304░ (http://www.openstreetmap.org/browse/way/23867528)

SEVERE (RouteNode): E:\openmtbmap\maps\63670113.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 45.436562,10.996342 when routing to 140░ (http://www.openstreetmap.org/browse/way/552651963)

SEVERE (RouteNode): E:\openmtbmap\maps\63670114.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 45.869223,10.886843 when routing to 236░ (http://www.openstreetmap.org/browse/way/225847075)

SEVERE (RouteNode): E:\openmtbmap\maps\63670117.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 45.570251,11.935898 when routing to 109░ (http://www.openstreetmap.org/browse/way/132914664)

SEVERE (RouteNode): E:\openmtbmap\maps\63670117.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 45.570286,11.935696 when routing to 103░ (http://www.openstreetmap.org/browse/way/132914664)

SEVERE (RouteNode): E:\openmtbmap\maps\63670116.osm.pbf: 10 or more arcs with the same initial bearing, expect routing problems at 46.553374,11.778210 when routing to 17░ (http://www.openstreetmap.org/browse/way/239751200)