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In urban environments, detection of moving obstacles and free space determination are key issues for driving assistance systems or autonomous vehicles. This paper presents a lidar-based perception system for passenger-cars, able to do simultaneously mapping and moving obstacles detection. Nowadays, many lidars provide multi-layer and multi-echo measurements. A smart way to handle this multi-modality...
A basic framework for wireless based mobile distributed environments is given by the wireless CORBA specification. It provides a generic solution hiding the underlying network level details from applications. However, in Blue tooth networks, it exhibits some problems when dealing with multi-user environments, like power consumption limitations of mobile devices or Blue tooth role assignment. This...
Future cooperative Intelligent Transport Systems (ITS) applications aimed to improve safety, efficiency and comfort on our roads put high demands on the underlying wireless communication system. To gain better understanding of the limitations of the 5.9 GHz frequency band and the set of communication protocols for medium range vehicle to vehicle (V2V) communication, a set of field trials with CALM...
Vehicular Ad hoc Networks appeared as a natural result of the evolution of the communication technology, which becomes able to satisfy the need of users to be connected anytime and anywhere. Providing comfort services such as Internet access or even vehicle traffic monitoring requires the use of road-side units (RSU) as gateways to the requested resources. Today, most of Intelligent Transport Systems...
Vehicular ad hoc network (VANET) is a special class of mobile ad hoc Networks (MANET), and is an important component of Intelligent Transportation System (ITS). VANET has a future potential in terms of a rich set of applications that it can provide to its customer. Accident detection is a key functionality of ITS. Due to the effects of channel fading and shadowing, individual vehicles may not be able...
Vehicular wireless networks are prospective tools which contribute to safer and more efficient roads. Therefore, they require the design and development of new communication protocols that should constitute the building blocks of future vehicular communication architecture. Many works have been carried out in this wide research area. In this paper, we propose a reliable distance-based broadcast protocol...
A real-time simulator for vehicle-to-vehicle (V2V) communication scenarios with a new integration method for the wireless network simulator NS-2 and the vehicular and traffic simulator (VATSIM) is introduced. Vehicular micro traffic networks with multiple intersections and vehicles using 802.11p communication are simulated and a collision warning system including a driver response model is investigated...
Nowadays applications of ETC (Electronic Toll Collection) are making a revolution in traffic charging. However, there are still some problems, such as the costs of redundant stations and network construct, the costs of the expensive devices, inconvenience in travels across provinces and so on. Meanwhile, the mobile telecommunication networks in China have got a country-wide coverage as they cover...
ISO TC 204 WG 16 is specifying an Intelligent Transportation Systems (ITS) communication architecture known as CALM for vehicle-vehicle and vehicle-infrastructure types of communications (V2X). The key concept is to support a variety of peer-to-peer communication scenarios between various ITS sub-systems (vehicle, roadside, center and personal), a variety of communication modes (one-to-one or one-to-many),...
The transportation domain brings particular needs dealing with the specificities of the environment (highly mobile, distributed, unstable network connection, ...). In this paper, we propose a first step in providing a dynamic adaptable framework responding to the non-functional needs of transportation's applicative services. Among the most important services we can name positioning, time or communication...
Mobile communications are spreading at a fast pace, from telephony to vertical applications such as healthcare, transportation or energy. In the case of transportation, their target is usually a limited geographical area. Geographical networking is currently under study, with proposals for identifying the target area by adding a geographical enhancement to the IP protocol. In this paper, we propose...
This paper describes a cooperative MANET protocol dedicated to intelligent transportation systems and its new experiment results in mobile scenarios. The protocol is named CIVIC (Communication Inter Veacutehicule Intelligente et Coopeacuterative). It is an auto-configuration inter-vehicle communication protocol, which supports ad-hoc and infrastructure networks, contains reactive and proactive routing...
Wireless mesh networks (WMN) is poised to be a cost-effective platform for many municipal applications in public safety, business and entertainment. In this paper we present WMN-based platform for content delivery within Intelligent Transportation Systems (ITS) applications. An example ITS application would be to deliver content used for vehicle route guidance in emergency evacuation situations. The...
The paper deals with intelligent transport systems (ITSs) and services seen from the viewpoint of present and future challenges. The authors contemplate the role of information and communication technologies (ICTs) and consider their impact on future development and trends. Present considerations are then confronted with EU directing as defined in the ITS Action Plan covering the period 2009 - 2014.
Information on the location of the phones can be used to estimate the speed at which the phones are moving. By tracking the speed variability of a substantial number of cell phones over time, the traffic flow characteristics of various highways can be estimated. A traffic flow estimation algorithm is developed by exploiting the occurrences of mobile handover which simulations are conducted with realistic...
The objectives of the research include to develop a novel Traffic Information Collection System (TICS) based on RFID, and to create a chance to lead ubiquitous environments in the transportation area.
Recent advancements in wireless communications and electronics have caused the emergence of a new type of networks called Wireless Sensor Networks (WSNs). WSNs have some unique features such as autonomy, low cost, tiny size, simple and fast deployment and high scalability, and many applications have been forecasted for them. In recent years, many WSN-based applications were proposed for Intelligent...
Cooperative systems based on V2X wireless communications offer promising opportunities for automotive safety and traffic efficiency improvement. Under preventive safety, cooperative assistance systems increase in-vehicle integrated safety systems functionality, enlarging driver's time-space perception as well as the quality and reliability of the environment data, and therefore enhancing his response...
An intelligent transportation system aims to make roads safer and less congested. Compared to traditional sensor networks, this recently emerged sensor network is not restricted by the power supply and the storage space. These sensors are equipped with GPS devices and large amount flash memory cards. Under such environment, an effective and efficient architecture for data collection and data exchange...
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