Using google earth can also give a sense for the quality of the data, for instance the positions of transit stops. The data I get looks quite different depending on where in the country you are. Here are three examples.
The first image is Park Allé in Århus. There is a handful (if not more) individual stops there but as you can tell, in the data I have they’ve all been mashed into just one stop whose position, according to the data, is in the middle of the road.
The second image is in Roskilde. There are two stops, one on either side of the road, and the data does include them as two different places. That’s why there are two lines, one for the one route that visits the stop on the one side of the road and one for the other route that visits the stop on the other side. Unfortunately the actual location of the stops is inaccurate, they’re shown as if they’re both in the middle of the road.
The last image is from Frederikshavn. There the stop’s location in the data I have is on the side of the road, as it should be, but it’s still some way away from where the stop really is.
I’ve looked for an example where the data I have gives the exact correct location of a stop. I haven’t found it. As far as I can tell all the data looks something like these examples. I’m not sure if that’s something that can be fixed automatically (I have some ideas) or if I just have to accept that I can’t rely too much on stop positions.
