Travel Cost Method

This requires the production of a demand curve via a "trip generating" function. The trip generating function simply explains the number of visits to an amenity (V) as a function of a constant (, alpha), the travel cost (TC) and any other relevant variables (X)

e.g. V = +b₁TC + b₂X

b₁ & b₂ are known coefficients indicating the strength of the relationship between the costs and other variables. In actual fact demand curve methods can become very complicated as indicated in the next example.