A perturbed utility route choice model

We propose a model in which a utility maximizing traveler assigns flow across an entire network under a flow conservation constraint. Substitution between routes depends on how much they overlap. This model can be estimated from route choice data, where the full set of route alternatives is included and no choice set generation is required. Nevertheless, estimation requires only linear regression and is very fast. Predictions from the model can be computed using convex optimization and is straightforward even for large networks.