This paper investigates geometric and algorithmic properties of the Voronoi diagram with a transportation network on the Euclidean plane. With a transportation network, the distance is measured as the length of the shortest (time) path. In doing so, we introduce a needle, a generalized Voronoi site. We present an O(nm + m + nm log n) algorithm to compute the Voronoi diagram with a transportatio...

Traditionally, the design of a transportation system has focused on one of the two systems that comprise the transportation architecture, the vehicle or the network design. However, to define a systems level architecture for a transportation system, it is necessary to expand the system definition during the design process to include the network definition, the vehicle architecture, and the oper...

For the past few years, phenomena such as traffic congestion and traffic accidents in big cities have occurred one after another, greatly and adversely affecting the people’s lives. Intelligent transportation system is perceived as an optimum solution to solve this question. This paper delves into several common route guidance algorithms, analyzes respective characteristics, improves and parall...

using a hierarchical hybrid fuzzy model, this paper presents an intelligent system to manage the traffic of ambulances and the vehicles for transporting blood and blood products and generally the transportation related to health emergencies. the transportation of emergency patients, emergency accidents and health-related emergencies, and the transportation of blood and blood products should be ...

Safety risk study on road transportation of hazardous chemicals is a reliable basis for the government to formulate transportation planning and preparing emergent schemes, but also is an important reference for safety risk managers to carry out dangerous chemicals safety risk managers. Based on the analysis of the transport safety risk of dangerous chemicals at home and abroad, this paper studi...

 Abstract: The shipments of hazardous materials (HAZMATs) induce various risks to the road network. Today, one of the major considerations of transportation system managers is HAZMATs shipments, due to the increasing demand of these goods (because it is more used in industry, agriculture, medicine, etc.), and the rising number of incidents that are associated to hazardous materials. This paper ...