Michele D. Simoni

KTH Royal Institute of Technology | KTH · School of Architecture and the Built Environment (ABE)

Consolidation schemes can reduce the negative impacts of urban freight movements. For this reason, in recent years several city authorities have promoted different measures to foster the implementation of urban consolidation centers. However, only a few real-world publicly promoted initiatives have succeeded due to several operational, financial, a...

Efficient and exact algorithms are important for performing fast and accurate traffic simulations with macroscopic traffic models. In this paper, we extend the semi-analytical Lax-Hopf algorithm in order to compute links' inflows and outflows with the LWR model. Our proposed Fast Lax-Hopf algorithm has a very low computational complexity. By adopti...

This paper presents a traffic simulation framework to reproduce urban freight movements, particularly concerning double-parked delivery operations. Since freight movements affect traffic and vice versa, we propose a hybrid framework that simulates traffic phenomena macroscopically and, at the same time, allows tracking delivery vehicles along their...

Technological improvements and investments by vehicle manufacturers and technology companies suggest that self-driving or “autonomous” vehicles (AVs) will become publicly accessible in many locations within the next decade or two, although design, production, and licensing challenges remain. AVs will change several aspects of personal trip making a...

The last mile of freight distribution is a critical part of the supply chain because of its significant costs and customers’ increasing expectations from e-commerce and same-day delivery services. Automated technologies in freight transportation represent an opportunity to develop more efficient systems characterized by the integration of different...

Crowdsourced delivery services (crowdshipping) represent a shipping alternative to traditional delivery systems, particularly suitable for e-commerce. Although some benefits in terms of reduced pollution and congestion could be obtained by replacing dedicated freight trips, the impacts of crowdshipping are unclear and depend on several factors such...

A self-driving, fully automated, or “autonomous” vehicle (AV) revolution is imminent, with the potential to eliminate driver costs and driver error, while ushering in an era of shared mobility. Dynamic ride-sharing (DRS), which refers to sharing rides with strangers en route, is growing, with top transportation network companies providing such serv...

The introduction of autonomous (self-driving) and shared autonomous vehicles (AVs and SAVs) will affect travel destinations and distances, mode choice, and congestion. From a traffic perspective, although some congestion reduction may be achieved (thanks to fewer crashes and tighter headways), car-trip frequencies and vehicle miles traveled (VMT) a...

This article introduces a new formulation for modeling and evaluating the effects of traffic signal timing over arterial roads, based on the Lighthill Whitham Richards model. We introduce a Hamilton–Jacobi formulation of the traffic model, in which the red phases of the traffic signals are described as internal conditions corresponding to a zero fl...

Moving and fixed bottlenecks are moving or fixed capacity restrictions that affect the propagation of traffic flow. They are a very important modeling approach to describe the effects of slow vehicles and traffic signals in transportation networks. However, the computation of solutions associated with the presence of fixed and moving bottlenecks is...

Urban consolidation center (UCC) represents in many cities the most chosen solution by the local governments to reduce the negative impacts of city freight distribution. In order to achieve successful results, it is important to consider also the perspective of carriers with respect to the choice of facility location and the evaluation of costs. Th...