I have no idea what garmin software would do, my guess is it would be the reverse of what we get here. Can Mkgmap guess if a map is in left-hand drive countries? probably by detecting roundabout direction if it is running clockwise. - nyem Mark Burton wrote:
Hi Nyem,
Many thanks for the explanation. One question: if the change from 0x27 to 0x0327 is applied, what effect does it have for people who drive on the right?
Cheers,
Mark
Hi,
I'm not sure if the issues have been raised here, so I'll try my best to explain. This is a problem only when the map is for left-hand drive users.
Issue 1: Incorrect roundabout display
http://www.mkgmap.org.uk/pipermail/mkgmap-dev/attachments/20090329/6a4b873f/... This only affect the information display on the top-left corner of my MobileXT screen - the roundabout should be clockwise not counter-clockwise. Routing correctly follows road direction.
Issue 2: Incorrect U-turn identification
http://www.yournavigation.org/?flat=3.08947&flon=101.54504&tlat=3.08836&tlon... Here is a u-turn but the driving direction will say "Turn right onto road, Turn right onto road" instead of "Perform a u-turn"
http://www.yournavigation.org/?flat=3.08894&flon=101.54504&tlat=3.08763&tlon... Here is turning left from a main road into a residential road and taking another left turn - but my Garmin incorrectly detects this as a u-turn. If my avoidance option includes avoid u-turn, routing will ignore this route.
When I apply the change u-turns are correctly identified, and the roundabout info display correctly shows traffic direction.
- nyem
Mark Burton wrote:
Hi,
Another problem solved is the left-hand traffic roundabout display issue on Nuvi and MobileXT (see attached pic) http://malfreemaps.com/viewtopic.php?p=26047#p26047. Not sure if this also correctly identify "u-turn" as opposed to "turn-right, turn-right" instruction. Sorry, can you tell me what the problem is that gets fixed by this change?
Thanks,
Mark