For my master thesis I am researching the potential of e-bikes (up to 25 km/h) in combination with train travel in the province of Antwerp (Belgium) . Therefore, I would like to calculate catchment areas (isochrones) for train stations in Antwerp, for both regular cycling and electric cycling. However, I will need to review (and change if necessary) the speed assumptions for these modes.
I understand the ORS tool which I am using in QGIS is opensource, so I think it should be possible to do this. However, I am new to coding and I am not finding sufficient information online which could help me.
Is there anyone who could explain me how to find these assumptions and change them?
Thanks for your answer! As I am new to coding, is there somewhere I can find a summary of the speed assumptions for the different modes/road class/surface etc.?
And do you by any chance know on what these assumptions were based?
for assumptions check this doc page or the cycling flagencoders in the sourcecode as nils mentioned already.
The guys that came up with these are cycling enthusiasts themselves so they have a pretty good understanding on how fast you can go on what surface/waytype. But basically this is just roughly mapping logical values to the ways where no speed information is given. By no means should you regard this as the exact speed with which you can travel on the different waytypes!
It is a classification to help returning reasonable times/distances.