QHM: The Quantitative Hierarchical Model, a Scalable Framework for Road Traffic Network Management

The QHM framework offers a scalable approach to network management (NM), which is the coherent management of traffic in large networks. The framework consists of a recursive decomposition of a large network and a recursive control strategy. The framework distributes the complexity of NM among different levels and, per level, among a number of subnetworks, such that each management instance has only a limited amount of complexity to cope with. In this way, NM becomes feasible and scalable, such that it can be applied to heterogeneous networks of arbitrary size.