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The increase of vehicle numbers in recent decades resulted in road traffic congestion problems. Such congestions are a characteristic of densely populated urban areas and occur daily during morning and afternoon rush hours. Urban areas have been suffering from the lack of space needed to build new road infrastructure. The traffic congestion problem can be solved by applying new traffic control approaches...
CORSIM short for corridor simulation was developed and is maintained by the Federal Highway Administration. It is a microscopic simulation model designed for the analysis of freeways, urban streets, and corridors or networks. The model includes two predecessor models: FRESIM and NETSIM. FRESIM is a microscopic model of freeway traffic, and NETSIM is a model of urban street traffic. CORSIM has a capability...
Information dissemination applications (e.g. weather, news, advertisements, traffic, and so on) are among the most promising ones for vehicular networks. However, disseminating information to all vehicles in vehicular networks is not a trivial task because of their specific characteristics like high dynamic topology and different density values along time and space. The proposals found in literature...
Changing lane is one of the methods to reach the destination faster and also could bring more highway traffic accidents. This study through the traffic feature recognition, cluster analysis, similarity measurements and estimation, analyzed the vehicle operation parameter before changing lane, proposed a changing lane probability estimating model which combines the SOM (Self-Organization Map) and BP...
There have been many studies for modeling vehicular traffic flow using fluid models. However, these previous approaches do not accommodate realistic models for traffic density, flow, and velocity. The existing models also fail to uncover the relationships among energy efficiency, capacity, and safety. We investigate traffic networks from a system-level perspective. In result, we provide a time-gap...
In this paper we propose an architecture to supervise and operate platoons of vehicles. The resulting system is mainly composed by a decentralized architecture where each vehicle, equipped with an On Board Unit, collects the fundamental data and forwards them to an operation center that stores and reorganizes them. We focus here on the automatons implemented in each system and we show a first prototype...
Quickly identifying the severity of highway acci-dents, as well as the resources required to assist the people involved in those accidents, is a basic requirement for future intelligent transportation systems. In this context, vehicular communication technologies currently being standardized are able to provide novel solutions to address this problem. In this work we study the feasibility of combining...
This paper describes the design of an energy-efficient wireless sensing network (WSN) system for highways lighting that we called vehicle detection for light providing system (VDLPS). This proposed study develops a system that would enable the efficient use of solar light poles. The VDLPS consists of solar light poles deployed in dangerous portions of highways. These poles would be assembled in groups...
In autonomous driving, object tracking is necessary to gather actual information about the object of interest. The longitudinal and lateral controls of automated highway systems need a target object not only to maintain the safety distance between vehicles but also to keep the following vehicle in the same track as the preceding vehicle. So far automated highway systems were only developed for urban...
Vehicular Ad hoc Networks (VANETs) have significant potential to host diverse applications associated with traffic safety, traffic efficiency and infotainment. VANETs have distinct characteristics and adapting routing protocols for effective communication is a subject of interest for many researchers in this domain. In this paper, we propose a position based Delay Tolerant Network (DTN) routing protocol...
A number of vehicles may be controlled and supervised by traffic security and its management. The License Plate Recognition is broadly employed in traffic management to recognize a vehicle whose owner has despoiled traffic laws or to find stolen vehicles. Vehicle License Plate Detection and Recognition is a key technique in most of the traffic related applications such as searching of stolen vehicles,...
Systems of systems (SoSs) are vulnerable to faults, for example arising as a result of the distribution and independence of their constituent systems. Our previous work has presented an initial framework for reasoning about faults and fault-tolerant design within an SoS at the architectural level, using a simple example of a single failure. In this paper we present a motivating example of an SoS within...
Vehicle to vehicle (V2V) communication has gained renewed interest among research community which is further signified by the allocation of dedicated spectrum and an IEEE standard for their usage in recent years. However, 802.11p, the current IEEE standard for vehicular communications, has a relatively low multiplicity (the number of links that it can simultaneously support). In this work, we propose...
The recent advances in wireless communication techniques have made possible for vehicles to download from the roadside communications infrastructure, namely drive-thru Internet. However, due to the fast-motions, harsh and intermittent wireless channels, the download volume of individual vehicles per drive-thru is quite limited as observed in real-world tests. This severely restricts the service quality...
A vehicular ad hoc network (VANET) is a promising addition to our future intelligent transportation systems, which supports various safety and infotainment applications. The high node mobility and frequent topology changes in VANETs impose new challenges on maintaining a long-lasting connection between vehicular nodes. As a result, the lifetime of communication links is a crucial measure in VANET...
Vehicular Ad Hoc Network technology facilitates real time information dissemination by enabling efficient inter-vehicle communications for the wide broadcasting of public safety and other message flows. A key challenge in VANET broadcasting is to develop a networking mechanism to coordinate data transmissions among moving vehicles. We propose a Directional Vehicular Backbone Network (DVBN) protocol...
Adaptive Cruise control (ACC) systems are nowadays used to increase safety in intelligent transportation systems. It exploits the advantages of various sensors for the acquisition and interpretation of the vehicles' environment. Sophisticated ACC functionalities, like collision avoidance on highways, require a high level of reliability and accuracy in the estimation of inter-vehicular distance. This...
Vehicular ad hoc network (VANET) is one type of wireless networks that uses moving vehicles as nodes in the network. In vehicular networks, it is challenging to transfer a query message for a requesting data efficiently when the destination node is out of transmission range from the requestor node. This is because many routing algorithms suffer from frequent path breaks when the vehicles are moving...
Electric vehicles are becoming a usual sight in the streets of Oslo. Thousands of commuters have chosen and EV because they are comparable in price to a conventional vehicle, and offer substantial savings in time and money. As new models, especially from Nissan and Mitsubishi have hit the market from late 2010, the sale of EVs has gone up significantly. This growth is expected to continue in the time...
Optimal design and management of highway toll station system is of great benefit in avoiding highways clog, shortening queuing time of car owners and reducing its operational cost. Based on the M/D/1 queuing model, this paper considers the sum of operating cost of a toll booth per unit time and waiting cost of a customer waiting for service per unit time as an objective function, and the optimal economic...
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