I am working on a project and I need to generate isochrones considering emergency vehicles speed or travel time. I am new to spatial data analysis. But as I found here: Average Speed for Isochrones. Emergency vehicles
apparently, it is possible to modify or create a profile for emergency vehicles but I don’t know how can I do this? after that is it possible to pass it to profile parameter of ors_isochrones() function in R?
I am really new to this subject, could you please let me know some useful sources for learning to be able to do what I explain above?