Hi I'm not sure if this problem lies with mkgmap or elsewhere, but I've noticed that my Garmin Nuvi seems to be avoiding roads with roundabouts generated from OSM routable data, especially if there are multiple roundabouts. I did some tests in Mapsource over a short 1.1 km route from S34 32.332 E150 51.412 to S34 32.541 E150 50.796 containing three roundabouts. I generated a route using Worldwide routable Garmin maps (mkgmap.version 1568). Here are the route directions and times: Directions/Name Distance Leg len Leg time Total time 1. 137 Reddall Pde 0 m 0:00:00 2. Get on Reddall Parade and drive west 1 m 1 m 0:00:00 0:00:00 3. Enter roundabout Roundabout 69 m 68 m 0:00:04 0:00:04 4. Take the 2nd left onto Reddall Parade 94 m 25 m 0:00:16 0:00:20 5. Enter roundabout Roundabout 463 m 369 m 0:00:41 0:01:01 6. Take the 2nd left onto Reddall Parade 487 m 24 m 0:00:10 0:01:11 7. Enter roundabout Roundabout 1.0 km 519 m 0:00:50 0:02:01 8. Take the 2nd left onto Reddall Parade 1.0 km 36 m 0:00:20 0:02:21 9. 213 Reddall Pde 1.1 km 67 m 0:00:22 0:02:43 As you can see, Mapsource has calculated that it will take 16 seconds to drive through the first roundabout (distance 25m), 10 seconds for the second roundabout (24m) and a whopping 20 seconds for the third roundabout (36m). That last roundabout works out at a speed of 6.5 km/h -- I could just about walk faster! By contrast, using City Navigator ANZ NT 2011.1, the route between the same points looks like this: Directions/Name Distance Leg len Leg time Total time 1. 137 Reddall Pde 0 m 0:00:00 2. Get on Reddall Pde and drive west 0 m 0 m 0:00:00 0:00:00 3. Enter roundabout Roundabout 70 m 70 m 0:00:06 0:00:06 4. Take the 2nd left onto Reddall Pde 99 m 29 m 0:00:05 0:00:11 5. Enter roundabout Roundabout 470 m 371 m 0:00:36 0:00:47 6. Take the 2nd left onto Reddall Pde 501 m 31 m 0:00:06 0:00:53 7. Enter roundabout Roundabout 1.0 km 510 m 0:00:49 0:01:42 8. Take the 2nd left onto Reddall Pde 1.0 km 37 m 0:00:10 0:01:52 9. 213 Reddall Pde 1.1 km 61 m 0:00:07 0:01:59 As you can see the roundabout routing times are much more reasonable. Is this excessive routing time through roundabouts a problem due to the way these roundabouts are drawn in OSM, or is it mkgmap, or something else? Ken.