This chapter introduces a novel tolling scheme denoted -tolling. -tolling approximates the marginal cost of each link using only two variables (current travel time and free-flow travel time) and one parameter. Due to its simplicity, -tolling is fast to compute, adaptive to current traffic, and accurate. This section proves that, under some assumptions, -tolling results in tolls that are equivalent to the marginal cost, and it demonstrates that -tolling can lead to near-optimal performance in practice.
