Before revision:  This structure, coined as the GT-model, allows us to analytically describe in terms of betweenness, how and why congestion emerges in particular geographical areas , and more importantly, how it may co-evolve with city growth and mobility pattern shifts. We observe the emergence of several congestion regimes, with abrupt transitions betwenn them, related to the entanglement of arterial and urban local roads.
After revision:  This structure, coined as the GT-model, allows us to analytically describe in terms of betweenness, how and why congestion emerges in particular geographical areas of monocentric cities. The model predicts the emergence of several congestion regimes, with abrupt transitions betwenn them, related to the entanglement of arterial and urban local roads.