This route is along a small single track road in Scotland. It is 37.3 miles, and ORS thinks it will take 43mins to drive. This is a problem unfortunately because the following more robust routing engines produce more realistic predictions:
we can see the max speed has been set to 60mph, however this is misleading as it would be difficult to attain this speed in real life with passing places. Does ors account for it being a lanes = 1 highway? This means speeds will be a bit slower than a 2 lane road. A lot slower in fact!
Is there any other way to improve the accuracy of ors here? Accurate drivetimes are really important, and it’s a risk to reputation when they’re out by 33%. Thanks
i don’t think we currently account for lanes:1 but that’s a good argument for a lower effective speed, if it’s not a oneway.
Would you mind opening an issue for that?
I have since found an even greater discrepancy for an identical route, in which ORS says 23.5 mins but google maps says 53 mins. I know from my own experience driving that road that google is correct. I would very much welcome any input to bring ORS routes more into line with reality where lanes = 1. This is because such roads are much slower to drive than the #maxspeed implies - the maxspeed is the legal maximum speed, but it doesn’t mean it’s even vaguely attainable. OSM and ORS badly needs a way to capture actual road speed.
