Investigating the role of network morphology in the underpinning of a network fundamental diagram

We investigate the role that network morphology plays in setting up the routing interactions that govern the emergence of a network fundamental diagram (NFD) in homogeneous road network patches. We generate ensembles of synthetic networks and find solutions to the static traffic assignment (STAP) for a range of (equivalent) global demands and trip distribution structures. The network ensembles are generated by building ββ-skeletons of randomised lattices according to the methodology presented by the authors in TGF 2017. We find that the total road length of the network largely determines network performance in the uncongested regime. The clustering coefficient is a secondary factor.