A stochastic model on flow versus concentration applied to traffic on hills. Paper presented at the 52nd Annual Meeting of the Highway Research Board HRB, Washington, D.C., January 1973.

Flow on a two-lane hill was studied by the authors who extended the deterministic model by allowing a probabilistic distribution of concentrations for a given mean value of flow. Hence, instead of two concentrations corresponding to a mean flow rate, they generate a probability distribution that varies with time for a whole range of concentrations.