Macroscopic Fundamental Diagram
A macroscopic fundamental diagram (MFD) is type of traffic flow fundamental diagram that relates space-mean flow, density and speed of an entire network with n number of links as shown in Figure 1. The MFD thus represents the capacity, of the network in terms of vehicle density with being the maximum capacity of the network and being the jam density of the network. The maximum capacity or “sweet spot” of the network is the region at the peak of the MFD function.
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