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Traffic congestion in big cities has been proven to be a difficult problemwith suboptimal effects in terms of driver delay and frustration, cost, andimpact on the environment. In principle, many transportation networks lack aunified framework, which will coordinate the traffic in such a manner, in orderto suppress congestion and at the same time improve the travel time of theusers situated in it. The rapid advancements in information, communication, andcomputation technologies have given rise to more elaborate modeling frameworks,aiming to act as the coordination unit necessary to counter the issue ofcongestion in real-time conditions. Such actions might have an adverse effecton the efficiency of the network, prospectively leading to greater waiting timeintervals for each individual driver. We propose a macroscopic model equippedwith an underlying reservation feature, known as Route Reservation Architecture(RRA). Vehicles enter the network (mainstream-wise or from the on-ramps) aslong as this inflow does not incur a density that exceeds the network'scritical density. Those vehicles prospectively exceeding the critical densityare stored as queues at the origin of the motorway stretch and within theon-ramps. Once there is sufficient space, for those vehicles to be accommodatedby the respective cell of the network, they are discharged from their queueinginstance at their respective origin, moving towards their assigned path freely.In previous works, this architecture has been only applied in microscopicsimulations in the context of urban networks without the influence of sourceterms (on-ramps). When the critical density of the stretch is reached, thereservations are activated, instigating a waiting interval to the vehiclesstored at queues, allowing vehicles only to enter the network at a later timeinstant, such that the critical density is not crossed.

Route Reservation Architecture in Tandem Transportation Networks with the Asymmetric Cell Transmission Model