One main group of a transportation network is a discrete hub covering problem that seeks to minimize the total transportation cost. This paper presents a multi-product and multi-mode hub covering model, in which the transportation time depends on travelling mode between each pair of hubs. Indeed, the nature of products is considered different and hub capacity constraint is also applied. Due to ...

Transportation is a key domain to address for promoting sustainability as it accounts for about one third of the energy consumption in the EU and in the US. Nevertheless, changing the transportation habits of citizens is a hard challenge. In this Special Issue of the EAI Endorsed Transactions on Ambient Systems, we present a selection of high-quality papers presented at the workshop on “Urban S...

Existing studies on transportation mode detection from global positioning system (GPS) trajectories mainly adopt handcrafted features. These features require researchers with a professional background and do not always work well because of the complexity of traffic behavior. To address these issues, we propose a model using a sparse autoencoder to extract point-level deep features from point-le...

This study defines a methodology to compute unitary costs for freight transportation modes. The main objective was to gather relevant costs data to support the formulation and evaluation of railway, road, pipelines and port projects. This article will concentrate on the following steps: Compilation and analysis of relevant modal cost studies, Methodological adjustments to make cost figures comp...

Walking, as an important transportation mode, plays a large part in urban transportation systems. This mode is of great importance for planners and decision-makers because of its impact on environmental and health aspects of communities. However, this mode is so complex in nature that makes it difficult to study or model. On the other hand, chaos theory studies complex dynamical nonlinear syste...

pay attention to the public transportation, cycling and pedestrian oriented development (pod) and car-free streets can increase the quality of urban spaces and create more secure pedestrians with psychological comfort for human. old urban fabric with hidden physical, historical, and cultural values has been the best evidence of urban identity and meanwhile, the life and growth of this fabric ha...

The problem of designing a decentralized advance hazard warning system for highway transportation systems entails the development of efficient switching controllers. In this paper, we represent the vehicle dynamics by a finite number of modes, each of which is represented by a low order transfer function and a constant time delay. The problem of highway safety analysis then gets translated into...

The trends of Personal Rapid Transit (PRT) and Automated Highways are converging. The result may be a new transportation mode built around robotic vehicles. This paper outlines how technology can transform transportation, making it more convenient, safer, more sustainable and less subject to congestion. Such a system could utilize existing infrastructure, but split highway lanes in half with ve...