On Tue, Nov 24, 2009 at 12:18:47AM +0000, Mark Burton wrote:

Hi Andrew,

...

Hi folks,

I'm having trouble with turn restriction relations, but can't figure out why. I've enabled logging (info-level) and can see some restrictions being created, such as this one: http://www.openstreetmap.org/browse/relation/36150

2009/11/23 20:44:17 INFO (RestrictionRelation): Turn restriction http://www.openstreetmap.org/browse/relation/36150 (at http://www.openstreetmap.org/?lat=53.33131&lon=-6.24412&zoom=17) no_right_turn added - blocks routing to way 7988564

However, other restrictions, such as this one, which is virtually identical in form, doesn't show up in the logs at all and is definitely not obeyed by my Garmin: http://www.openstreetmap.org/browse/relation/65792

Are there any known issues with reading relations, or does anyone have suggestions how to figure what's happening with relations like the second one?

Thanks for the report.

I believe I have fixed the problem, it was just a run of the mill subtle bug.

Just checked the diff; not a chance I'd have found it after my first week looking through the code :)

Please try using version 1404 and let us know what happens.

A quick run shows all but three restrictions are now added, all three of which have a way as a "via", which I know is unsupported (is that a Garmin or mkgmap issue?). I'll try the Garmin out on the road and confirm later today, but it's looking better already. Many thanks! Andrew

Hi again, On Tue, Nov 24, 2009 at 10:11:19PM +0000, Mark Burton wrote:

Hi Andrew,

...

...

Please try using version 1404 and let us know what happens.

A quick run shows all but three restrictions are now added, all three of which have a way as a "via", which I know is unsupported (is that a Garmin or mkgmap issue?). I'll try the Garmin out on the road and confirm later today, but it's looking better already.

Unfortunately while driving this morning, my Vista HCx was still suggesting turns that are, since r1404, showing up in Mkgmap logs as being created. Very odd. An example: http://www.openstreetmap.org/browse/relation/61986 Sorry :( Andrew

On Wed, Nov 25, 2009 at 10:05:39AM +0000, Mark Burton wrote:

Hi Andrew,

...

Unfortunately while driving this morning, my Vista HCx was still suggesting turns that are, since r1404, showing up in Mkgmap logs as being created. Very odd. An example: http://www.openstreetmap.org/browse/relation/61986

Sorry :(

Just tested those restrictions with mapsource and they are obeyed. Not sure why the vista should be different. What vehicle type are you using in the routing options?

Settings are Calculation method: Better route (would "best route" make a difference to following restrictions?) Calculate routes for: Car/Motorcycle Avoid: U-turns Thanks again, Andrew