The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Map matching is an important part of map routing in modern transportation applications. In the map matching process, the effect of two main components, i.e. (i) the features of road networks, and (ii) the design aspects of geolocation services, is still not well understood. In this paper, using a combination of probabilistic analysis and simulations we study the effects of the above factors on the...
Global Navigation Satellite Systems (GNSS) based localization in the context of Intelligent Transportation Systems, Advanced Driver Assistance Systems and ultimately the development of autonomous vehicles often requires accuracy with integrity. Low-cost data fusion algorithms for positioning that integrate GNSS and additional in-vehicle sensor information are able to handle short term GNSS outages...
This article implies the results of attitude determination of land vehicle with high precision GNSS signal receivers. We analyze vehicle roll angle, heading and geometric centre determination possibility and precision. There are theoretical and practical results presented in the article. In aim to implement the practical part two precise GNSS receivers were installed on the roof of a vehicle. GNSS...
Highly accurate digital road maps are the status quo for advanced driver assistance systems and automated driving functions. To achieve high map accuracies, recent approaches deployed high-cost and high-precision sensor systems. This paper proposes a novel automated map generation framework for standardized high-velocity roads using a low-cost sensor system composed of a monocular camera and a low-precision...
Visible Light Communication (VLC) is a new emerging technology that is being proposed as a reliable and supportive choice for short range communications in ITS. On the same context, Laser Range Finders (LRF) sensors are used for the vehicular environment perception. Compared to VLC, LRF can provide more coverage range and extended viewing angle. To take the full advantages of both technologies features,...
An essential function for automated vehicle technologies is accurate localization. It is difficult, however, to achieve lane-level accuracy with low-cost Global Navigation Satellite System (GNSS) receivers due to the biased noisy pseudo-range measurements. Approaches such as Differential GNSS can improve the accuracy, but usually require an enormous amount of investment in base stations. The emerging...
The Smart cities are a relevant topic nowadays. It attracts most researchers and governmental authorities, due to the vision to adopt technology information and communication in this context, to facilitate access to urban services. Security stills a permanent challenge that affects most smart cities applications. Vehicular Ad Hoc Networks (VANets) is one of those applications, classified in the smart...
This paper introduces visible light communication (VLC) for inexpensive vehicle-to-vehicle messaging (V2V) using off the shelf LEDs and photo diodes. VLC is a cost effective method to integrate with intelligent transport systems (ITS) for road safety applications. Light from the brake lamps of a vehicle can be used to transmit messages for emergency hard brake, so that the following vehicle can take...
We implement a collision prevention system, called pSafety, which instantaneously informs pedestrians and drivers of the potential threatening accidents. Unlike other systems, pSafety alerts pedestrians of threatening vehicles coming from not only the line-of-sight, but also non-line-of-sight due to obstructions of the wall corner or other vehicles. pSafety collects GPS information from smartphones...
Advanced map-matching algorithms use location and heading of GPS points along with geometrical and topological features of digital road networks to find the road segment on which the vehicle is moving. However, GPS errors sometimes impede map-matching algorithms in finding the correct segment, especially in dense and complicated parts of the network, such as near intersections with acute angles or...
We propose a multi-hop reliable broadcasting (M-HRB) scheme suitable for a wide range of vehicular ad-hoc network (VANET) applications in urban setting. Multi-hop reliability is performed using local state information. Basically, a street is divided into multiple cells to form grid-like zones. We apply a proactive local state processing scheme exploiting features of periodic beacons to estimate wireless...
Global Navigation Satellite Systems (GNSS) is becoming one of the main components supporting Intelligent Transport Systems (ITS) and value-added services in road transport and personal mobility. The use of GNSS is expected to grow significantly due to improvements in positioning performance, with positive impacts such as: finding the optimal route; improving traffic and travel efficiency as well as...
The paper deals with the issues that have to be faced when researching a Road User Charging (RUC) in Norway based upon GNSS and with an innovative methodology especially developed to address these issues proposed by CEN-CENELEC TC5/WG1 and supported by the SaPPART COST Action. The paper presents a case study applying the methodology to a specific RUC algorithm developed by the Norwegian company Q-Free...
Reliable connectivity between vehicles is a requirement for efficient overtaking warning systems. We investigate the 6 GHz propagation channel between oncoming vehicles with five different types of large obstructing vehicles in a poor scattering environment. The presented channel gains emphasize the advantages of different antenna positions and the difference between a straight road and curved road...
Motor vehicles have become an essential part of our day to day life. The demand for the vehicles is increasing at uncontrollable rate. The other rate which is also going beyond control is Road Accident. Road Accidents happen in case of Rash Driving, Over-speeding, Breaking Lanes, Ignoring Safety Precautions etc. This happens globally and is one of the major causes of death. In its report, WHO (World...
Recent years have seen a great deal of research into Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) communications, which will contribute to advances in driving support systems. In contrast to V2I communications, V2V communications offer the advantage of not requiring infrastructure, but introduction of such systems is not expected to be effective unless there is sufficient penetration...
Many traffic-related applications require the nodes in a vehicular ad-hoc network (VANET) to periodically broadcast their state information. As measurements campaigns or simulations to evaluate the reliability of packet transmission are slow and scenario-specific, we present an analytic performance assessment tool that accounts for the spatial statistics of the nodes on a road, in a scenario of crossing...
Traffic accidents are one of the main causes of sudden death worldwide. Inadequate driver response to changing road and traffic conditions leads to a higher probability of road accidents. With the rise of the concept of Smart Cities, safety and security are two important issues that need to be addressed. In this paper, we propose an Intelligent Traffic Alert System (iTAS) that warns drivers of potential...
In multi-hop dissemination a timer-based and a probabilistic methods are the high performing methods in Vehicular Ad-hoc Networks (VANETs), due to simplicity, low overhead, and high efficiency. However, such approaches neglect the fact that vehicles transmission ranges are typically heterogeneous due to different transmission power values. In our previous work, we introduce new area-based methods...
In multi-hop dissemination, timer-based and probabilistic methods are high performing methods in Vehicular Ad-hoc Networks (VANETs), owing to their simplicity, low overhead and high efficiency. However, such approaches neglect the fact that vehicle transmission ranges are typically heterogeneous, which could be due to dynamic adjustment of the transmission power value. In our previous work, we introduced...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.