scholarly journals Heterogeneous (ITS-G5 and 5G) Vehicular Pilot Road Weather Service Platform in a Realistic Operational Environment

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1676
Author(s):  
Muhammad Naeem Tahir ◽  
Marcos Katz
Keyword(s):  
Real Time ◽  
Traffic Safety ◽  
Field Measurement ◽  
Road Traffic ◽  
Research Work ◽  
Ieee 802.11P ◽  
Weather Data ◽  
Test Bed ◽  
Operational Environment ◽  
Measurement Results

VANETs (Vehicular Ad hoc Networks) operating in conjunction with road-side infrastructure connecting road-side infrastructure are an emerging field of wireless communication technology in the vehicular communication’s domain. For VANETs, the IEEE 802.11p-based ITS-G5 is one of the key standards for communication globally. This research work integrates the ITS-G5 with a cellular-based 5G Test Network (5GTN). The resulting advanced heterogeneous Vehicular Network (VN) test-bed works as an effective platform for traffic safety between vehicles and road-side-infrastructure. This test-bed network provides a flexible framework to exploit vehicle-based weather data and road observation information, creating a service architecture for VANETs that supports real-time intelligent traffic services. The network studied in this paper aims to deliver improved road safety by providing real-time weather forecast, road friction information and road traffic related services. This article presents the implementation of a realistic test-bed in Northern Finland and the field measurement results of the heterogeneous VANETs considering the speed of vehicle, latency, good-put time and throughput. The field measurement results have been obtained in a state-of-the-art hybrid VANET system supporting special road weather services. Based on field measurement results, we suggest an efficient solution for a comprehensive hybrid vehicular networking infrastructure exploiting road weather information.

scholarly journals Real-Time Communication Support for Cooperative, Infrastructure-Based Traffic Safety Applications

2011 ◽  
Vol 2011 ◽  
pp. 1-17 ◽  
Author(s):  
Annette Böhm ◽  
Magnus Jonsson
Keyword(s):  
Real Time ◽  
Traffic Safety ◽  
Road Traffic ◽  
Radio Channel ◽  
Ieee 802.11P ◽  
Transport Systems ◽  
Traffic Density ◽  
Road Side Unit ◽  
Traffic Safety Applications ◽  
Safety Applications

The implementation of ITS (Intelligent Transport Systems) services offers great potential to improve the level of safety, efficiency and comfort on our roads. Although cooperative traffic safety applications rely heavily on the support for real-time communication, the Medium Access Control (MAC) mechanism proposed for the upcoming IEEE 802.11p standard, intended for ITS applications, does not offer deterministic real-time support, that is, the access delay to the common radio channel is not upper bounded. To address this problem, we present a framework for a vehicle-to-infrastructure-based (V2I) communication solution extending IEEE 802.11p by introducing a collision-free MAC phase assigning each vehicle an individual priority based on its geographical position, its proximity to potential hazards and the overall road traffic density. Our solution is able to guarantee the timely treatment of safety-critical data, while minimizing the required length of this real-time MAC phase and freeing bandwidth for best-effort services (targeting improved driving comfort and traffic efficiency). Furthermore, we target fast connection setup, associating a passing vehicle to an RSU (Road Side Unit), and proactive handover between widely spaced RSUs. Our real-time MAC concept is evaluated analytically and by simulation based on a realistic task set from a V2I highway merge assistance scenario.

scholarly journals Investigation of a Dynamic Power Line Rating Concept for Improved Wind Energy Integration Over Complex Terrain

2014 ◽  
Author(s):  
Tyler B. Phillips ◽  
Inanc Senocak ◽  
Jake P. Gentle ◽  
Kurt S. Myers ◽  
Phil Anderson
Keyword(s):  
Steady State ◽  
Real Time ◽  
Weather Conditions ◽  
Power Line ◽  
Transmission Capacity ◽  
Weather Data ◽  
Energy Integration ◽  
Test Bed ◽  
Worst Case ◽  
Conductor Temperature

Dynamic Line Rating (DLR) is a smart grid technology that allows the rating of power line conductor to be based on its real-time temperature. Currently, conductors are generally given a conservative static rating based on near worst case weather conditions. Using historical weather data collected over a test bed area in Idaho, we demonstrate there is often additional transmission capacity not being utilized under the current static rating practice. We investigate a DLR method that employs computational fluid dynamics (CFD) to determine wind conditions along transmission lines in dense intervals. Simulated wind conditions are then used to calculate real-time conductor temperature under changing weather conditions. In calculating the conductor temperature and then inferring the ampacity, we use both a steady-state and transient calculation procedure. Under low wind conditions, the steady-state assumption predicts higher conductor temperatures which could lead to unnecessary curtailments, whereas the transient calculations produce temperatures that can be significantly lower, implying the availability of additional transmission capacity. Equally important, we demonstrate that capturing the wind direction variability in the simulations is critical in estimating conductor temperatures accurately.

scholarly journals Impact of Control System Model Parameters on the Obstacle Avoidance by an Autonomous Car-Trailer Unit: Research Results

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2958
Author(s):  
Leon Prochowski ◽  
Mateusz Ziubiński ◽  
Patryk Szwajkowski ◽  
Mirosław Gidlewski ◽  
Tomasz Pusty ◽  
...  
Keyword(s):  
Control System ◽  
Traffic Safety ◽  
High Speed ◽  
Linear Models ◽  
Motor Vehicle ◽  
Road Traffic ◽  
Research Work ◽  
Model Parameters ◽  
Road Traffic Safety ◽  
The Impact

The introduction of autonomous cars will help to improve road traffic safety, and the use of a cargo trailer improves the energy efficiency of transport. One of the critical (collision) road situations has been considered, where immediate counteraction is required in a space that has been only partly defined. This research work was aimed at determining the impact of the trajectory planning method and the values of some parameters of the control system on the feasibility of safe avoidance of an obstacle that has suddenly appeared. The obstacle is assumed to be a motor vehicle moving on a road intersection along a collision path in relation to the autonomous car-trailer unit (CT unit) travelling at high speed. Analysis of cooperation between several non-linear models (representing the car, trailer, tyre–road interaction, and driving controller) has been carried out. Mathematical models of the control system and the CT unit have been built. The process of selection of temporary and variable parameters, applied to the control system for the time of the critical situation under consideration, has been shown. The research work carried out has made it possible to recommend appropriate parameter values for the control system.

Research and Design of Vehicle Dynamic Safety Warning System

2013 ◽  
Vol 662 ◽  
pp. 944-947
Author(s):  
Hong Wei Cui
Keyword(s):  
Real Time ◽  
Traffic Control ◽  
Road Traffic ◽  
Research Work ◽  
Warning System ◽  
Control Area ◽  
Vehicle Dynamic ◽  
Safety Warning ◽  
Safety Parameters ◽  
Research And Design

Vehicle dynamic safety warning system based on data fusion is researched and designed in this paper. Dynamic information of vehicle, road and environment can be collected in real time. By analyzing and processing these data, active safety warning information is achieved for individual vehicle on different work condition. Safety parameters of vehicle and road condition are detected. Warning information is transferred by wireless network in real time. Research work in this paper is applied to road traffic control area. This vehicle warning system is of value to removing incipient fault of running vehicle, improving reliability, rational maintaining and proper inspection.

Parallel Processing Implementation on Weather Monitoring System for Agriculture

2017 ◽  
Vol 6 (3) ◽  
pp. 682 ◽  
Author(s):  
Dwi Susanto ◽  
Kudang Boro Seminar ◽  
Heru Sukoco ◽  
Liyantono Liyantono
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Arima Model ◽  
Research Work ◽  
Weather Data ◽  
Raspberry Pi ◽  
Computational Performance ◽  
Monitoring And Forecasting ◽  
Speed Up ◽  
Weather Visualization

<p>Weather monitoring and forecasting are very important in agricultural sectors. There are several data need to be collected in real-time to support weather monitoring and forecasting systems, such as temperature, humidity, air pressure, wind speed, wind direction, and rainfall. The purpose of this research to develop a real-time weather monitoring system using a parallel computation approach and analyze the computational performance (i.e., speed up and efficiency) using the ARIMA model. The developed system wireless has been implemented on sensor networks (WSN) platform using Arduino and Raspberry Pi devices and web-based platform for weather visualization and monitoring. The experimental data used in our research work is a set of weather data acquired and collected from January until March 2017 in Bogor area. The result of this research is that the speed up of the using eight processors computation three times faster than using a single processor, with the efficiency of 50%.</p>

scholarly journals Vehicular networking and road weather related research in Sodankylä

2016 ◽  
Author(s):  
T. Sukuvaara ◽  
K. Mäenpää ◽  
R. Ylitalo
Keyword(s):  
Traffic Accidents ◽  
Research Work ◽  
Research Field ◽  
Ieee 802.11P ◽  
Transport Systems ◽  
Current Status ◽  
Weather Data ◽  
Research Centre ◽  
General View ◽  
Vehicular Networking

Abstract. Vehicular networking and especially safety-related wireless vehicular services have been under intensive research for almost a decade now. Only in recent years, also the road weather information has been acknowledged to play an important role when aiming to reduce traffic accidents and fatalities via Intelligent Transport Systems (ITS). Part of the progress can be seen as a result of Finnish Meteorological Institute's (FMI) long-term research work in Sodankylä within the topic, originally started in 2006. Within multiple research projects, FMI Arctic Research Centre has been developing wireless vehicular networking and road weather services, in co-operation with FMI meteorological services team in Helsinki. At the beginning the wireless communication was conducted with traditional Wi-Fi type local area networking, but during the development the system has been evolved to hybrid communication system of combined Vehicular area Networking (VANET) system with special IEEE 802.11p protocol and supporting cellular networking based on 3G commercial network, not forgetting support for Wi-Fi-based devices also. For the piloting purposes and further research, we have established a special combined road weather station (RWS) and roadside unit (RSU), to interact with vehicles as a service hotspot. In the RWS/RSU we have chosen to build support to all major approaches, IEEE 802.11, traditional Wi-Fi and cellular 3G. We employ road weather systems of FMI, RWS and vehicle data gathered from vehi20 cles, into the up-to-date localized weather data delivered in real-time. IEEE 802.11p vehicular networking is supported with Wi-Fi and 3G communications. This paper briefly introduces the research work related vehicular networking and road weather services conducted in Sodankylä, as well as the research project involved in this work. The current status of instrumentation, available services and capabilities are presented in order to formulate the clear general view of the research field.

scholarly journals Performace Evaluation of Vehicular Communication

2020 ◽  
Vol 21 (3) ◽  
pp. 171-180
Author(s):  
Muhammad Naeem Tahir ◽  
Kari Mäenpää ◽  
Timo Sukuvaara
Keyword(s):  
Wireless Communication ◽  
Traffic Safety ◽  
Road Traffic ◽  
Cyber Physical Systems ◽  
Ieee 802.11P ◽  
Road Accidents ◽  
Vehicular Communication ◽  
Safety Feature ◽  
Physical Systems ◽  
Road Traffic Safety

AbstractModern societies are built on good road infra-structure and efficient transport system. Safety is a high-priority consideration in development of road traffic systems. In recent years the weather information has become becomes very vital for road traffic safety because slippery roads are the key source of road accidents in northern regions of Europe, America and Canada as well. In this article we are presenting the test experiences and pilot road weather related services by executing a set of Vehicle to Infrastructure (V2I) communication scenarios by using IEEE 802.11p and 5G test networks. We have made an effort to evaluate the performance of IEEE 802.11p and 3GPP (3rd Generation Partnership Project) 5G test network. We also analyzed the performance of IEEE 802.11p with and without safety feature for secure and reliable vehicular communication. The combination of IEEE 802.11p with 5G test network cellular network makes the traffic system heterogeneous for traffic safety. This heterogeneous system provides the opportunity to exploit the vehicle-based actuators, sensor, and observation data in order to produce the intelligent service platform and up-to-date real time services for vehicles.In this article we have also made a comparison by using an IEEE 802.11p system having safety feature of SafeCOP (Safe Co-operating Cyber-Physical Systems using Wireless Communication) project. SafeCOP is a European project that aims cyber-physical systems-of-systems relying on wireless communication for safe and secure cooperation. This safety feature will help to decrease the amount of road accidents (Car crashes, injuries and fatalities) by offering safe and secure V2V and V2I co-operation. The fundamental advantage of this kind of performance analysis is that the communication between Vehicle-to-Road Weather station (V2RWS) can be exchanged safely and reliably, at the cost of network resources consumed by a safety feature in IEEE 802.11p. It’s clearly presented in this paper, that the use of heterogeneous network and SafeCOP feature for vehicular networking has a clear potential in near future for vehicle’s safety and security of vehicular network.

scholarly journals Vehicular-networking- and road-weather-related research in Sodankylä

2016 ◽  
Vol 5 (2) ◽  
pp. 513-520 ◽  
Author(s):  
Timo Sukuvaara ◽  
Kari Mäenpää ◽  
Riika Ylitalo
Keyword(s):  
Traffic Accidents ◽  
Research Work ◽  
Research Field ◽  
Ieee 802.11P ◽  
Transport Systems ◽  
Current Status ◽  
Weather Data ◽  
Research Centre ◽  
General View ◽  
Vehicular Networking

Abstract. Vehicular-networking- and especially safety-related wireless vehicular services have been under intensive research for almost a decade now. Only in recent years has road weather information also been acknowledged to play an important role when aiming to reduce traffic accidents and fatalities via intelligent transport systems (ITSs). Part of the progress can be seen as a result of the Finnish Meteorological Institute's (FMI) long-term research work in Sodankylä within the topic, originally started in 2006. Within multiple research projects, the FMI Arctic Research Centre has been developing wireless vehicular networking and road weather services, in co-operation with the FMI meteorological services team in Helsinki. At the beginning the wireless communication was conducted with traditional Wi-Fi type local area networking, but during the development the system has evolved into a hybrid communication system of a combined vehicular ad hoc networking (VANET) system with special IEEE 802.11p protocol and supporting cellular networking based on a commercial 3G network, not forgetting support for Wi-Fi-based devices also. For piloting purposes and further research, we have established a special combined road weather station (RWS) and roadside unit (RSU), to interact with vehicles as a service hotspot. In the RWS–RSU we have chosen to build support to all major approaches, IEEE 802.11, traditional Wi-Fi and cellular 3G. We employ road weather systems of FMI, along with RWS and vehicle data gathered from vehicles, in the up-to-date localized weather data delivered in real time. IEEE 802.11p vehicular networking is supported with Wi-Fi and 3G communications. This paper briefly introduces the research work related to vehicular networking and road weather services conducted in Sodankylä, as well as the research project involved in this work. The current status of instrumentation, available services and capabilities are presented in order to formulate a clear general view of the research field.

scholarly journals Enhancing Traffic Safety with Mobile Applications

2016 ◽  
Vol 9 (3) ◽  
pp. 216
Author(s):  
H Kaartinen ◽  
J Jämsä
Keyword(s):  
Decision Making ◽  
Real Time ◽  
Traffic Safety ◽  
Intelligent Transportation Systems ◽  
Mobile Applications ◽  
Data Transfer ◽  
Research Work ◽  
Transportation Systems ◽  
Point Of View ◽  
Time Data

Intelligent Transportation Systems (ITS) have great potential and market on modern traffic environment. Technologies of the day enable the real-time data transfer and presentation for the actors in traffic and outside of it. Inter-cognitive communication is a form of communication where an information system gathers data and processes it to a form of which users can benefit on their decision making. In this paper we will present how deploying new cognitive elements on mobile applications can increase traffic safety. The most important point of view in sharing the traffic data is how to present it for the driver and how to make the data transfer reliable and safe. New vehicles have built-in solutions, such as comprehensive infotainment systems, to present the information and warnings, but older vehicles do not have this option. Therefore the modern devices, such as smartphones and tablet computers can be utilized for these purposes. This paper describes Centria’s research work on developing mobile applications for improving the traffic flow and safety by real-time support for the driver’s decision making. Also, the data security has been studied and tested at Centria, and will be reported in this paper.

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