On 1 Sep 2008, at 23:54, Mark Williams wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > David Groom wrote: >> When tagging ferry routes is anyone tagging ferry speed, and if so >> do you >> simply add maxspeed = ?? to thr route? >> >> david >> >> > There was a recent discussion on the routing list about this - iirc we > agreed to use a (low) assumed speed of 4-5Km/h for ferries (as opposed > to the current practice of not routing them at all..) >
That low speed is far too low. When I was on the Holyhead to Dublin ferries recently, my GPS was giving 45mph for the return journey, and 25-30mph for the outward (different ferries, the return was the swift fastcraft). If you want the GPS traces for analysis let me know. I don't know if this low speed was used to take into account the 45 minute checkin? However it would be a better option to say this point adds a 45 minute delay. Shaun _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
