I want to investigate how people travel to various stations in the UK. I have found data on both passengers per year, and traffic by mode along the main roads leading to those stations, also per year.
With this data I should be able to get some estimate of how many passengers use each mode to get to the station eg)
change in passengers = A+ Bchange in cars + Cchange in bus +...
although this would give the amount of additional passengers resulting from additional traffic, not the amount of additional cars/buses per x new passengers.
Can anyone think of a functional form that answers my question with the available data? Many thanks.