Trafikverket

Sweden, Sweden

Trafikverket

Sweden, Sweden
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NIRA Dynamics hat eine neue Fahrzeugfunktion im Programm, die die Verkehrssicherheit erheblich erhöht. Laufend und in Echtzeit wird die Griffigkeit (Reibwert) der Straßenoberflöche überwacht und von einer großen Zahl Fahrzeuge an einen zentralen Server geschickt und aufbereitet. Von dort können dann Fahrzeuge im entsprechenden Gebiet immer aktuell, hochauflösend und verlässlich über die jeweiligen Strassenverhältnisse informiert werden. Im aktuellen Winter 2016/2017 hat NIRA der schwedischen Strassenverkehrsbehörde Trafikverket und dem Spezial-Wetterdienst Klimator AB eine Software zur Verfügung gestellt, die den Straßenzustand in einer entsprechend ausgerüsteten Fahrzeugflotte laufend überwacht. Die gesammelten Daten werden dann auf einem NIRA-Server in einer Echtzeit-Analyse zusammengeführt. Road Surface Information, oder abgekürzt RSI, ermöglicht jedoch nicht nur die punktgenaue Warnung von menschlichen Fahrern, sondern kann auch als Schlüsselfunktion für selbstfahrende Fahrzeuge angesehen werden. Der sichere Betrieb solcher Fahrzeuge setzt nämlich voraus, jederzeit eine realistische Vorstellung vom nötigen Bremsweg zu haben. Dieser hängt wiederum ganz wesentlich vom aktuell zur Verfügung stehenden Reibwert ab. Deshalb ergänzt RSI einen entscheidenden Baustein auf dem Weg zum sicheren autonomen Fahren. Ein positiver Nebeneffekt ist, dass die RSI-Software von NIRA den Winterdienst erheblich effektiver machen kann: Es wird nur noch gestreut, wo es wirklich notwendig ist - das spart Kosten und schont die Umwelt. NIRA Dynamics hat in den vergangenen Jahren erhebliche Ressourcen investiert, um bei vernetzten und autonomen Fahrzeugen in der Weltspitze mitzuspielen. Nicht zuletzt durch Präsenz im Silicon Valley ist es NIRA Dynamics dabei gelungen, sich als führender Anbieter von Echtzeit-Straßenzustandsdaten auf Basis von vorhandenen Fahrzeuginformationen zu etablieren. Beitrag des schwedischen Fernsehens SVT über das Projekt und RSI (auf Schwedisch): Über NIRA: NIRA Dynamics AB, gegründet 2001, mit Hauptsitz im schwedischen Linköping ist spezialisiert auf Signalverarbeitung und Sensorfusion und entwickelt kosteneffektive Sicherheits- und Navigationslösungen für die globale Autoindustrie - mit dem  Kundennutzen stets im Fokus. Zum wachsenden Kundenkreis gehören bereits Hersteller wie Audi, FIAT, Renault, SEAT, Skoda, Volvo und VW. Weitere Informationen: Johan Hägg, Leiter Marketing & Sales (englisch/schwedisch) Telefon: +46 700-454056 Email: johan.hagg@niradynamics.se Jörg Sturmhoebel, Marketing & Sales (deutsch) Telefon: +46 733-580103 Email:


HELSINKI, Finland--(BUSINESS WIRE)--Regulatory News: Eltel’s fixed communication business has signed a one-year extension of its current agreement with Trafikverket (Swedish Transport Administration). The value of the contract extension is approximately EUR 15 million and it will extend until the end of 2018. The extension of the contract is based on the three-year agreement from 2015 in which the companies agreed on a two-year option. The current extension leaves one more option year open for


News Article | February 23, 2017
Site: www.prnewswire.co.uk

NIRA Dynamics har nyligen rullat ut en helt ny funktion för bilar, som förväntas öka trafiksäkerheten avsevärt. Funktionen räknar kontinuerligt och i realtid ut hur mycket grepp (friktion) en bil har mot vägbanan. Denna information om vägens tillstånd skickas från ett stort antal bilar till en central server, från vilken insamlad vägdata sedan kan skickas ut till bilar som är på väg in i det aktuella området. Dessa får därmed relevant väginformation och halkvarningar i tid. Under vintern 2016/2017 har NIRA försett Trafikverket och Klimator AB med mjukvara för ett stort antal bilar som kontinuerligt samlar in information om väglaget. Informationen skickas till NIRAs servrar och aggregeras för att möjliggöra insikter om väglaget i realtid. Den nya funktionen, som kallas för Road Surface Information (RSI), gör det inte bara möjligt för förare att få information om halt väglag. Självkörande bilar behöver också veta hur bra väggreppet är och hur lång bromssträckan är i varje ögonblick, och med Road Surface Information läggs ännu en pusselbit till möjliggörandet av säkra självkörande bilar. Som en positiv bieffekt möjliggör NIRAs mjukvara även effektivare och miljövänligare vinterlagshållning, något som kan innebära stora kostnadsbesparingar. NIRA Dynamics har de senaste åren satsat stora resurser på att ligga i framkant när det gäller funktioner för självkörande och uppkopplade bilar. Med satsningen, som bland annat inkluderar närvaro i Silicon Valley, har NIRA lyckats positionera sig som en unik leverantör när det gäller väglagsinformation insamlad från bilar i realtid. SVT publicerade nyligen ett inslag om lösningen: OM NIRA: NIRA Dynamics grundades 2001 och har sitt huvudkontor i Sverige. Med specialistkompetens inom bland annat sensorfusion utvecklar NIRA kostnadseffektiva säkerhets- och navigationslösningar som skapar mervärden för den globala fordonsindustrin. Kunderna inkluderar några av världens ledande biltillverkare, såsom Audi, Volkswagen, Seat, Skoda, Volvo, Fiat och Renault.


Lundberg J.,Lulea University of Technology | Bohlin A.,Andreasen AB | Syk M.,Trafikverket
International Journal of Systems Assurance Engineering and Management | Year: 2011

Manganese crossings are widely used in the railway sector because of their self-hardening properties, but one major disadvantage is that maintenance actions using condition monitoring of internal flaws are problematic to perform. The reason is that manganese material is coarse-grained with internal reflections. In the present study, measurements on internal flaws with a spectrum of ultrasonic equipment were performed on a real manganese crossing. After the measurements, the crossing was cut up and inspected. Correlations with the measurements and the real flaws indicate that, independent of the equipment used, false echoes were common, as well as a low capacity to indicate real flaws. © The Society for Reliability Engineering, Quality and Operations Management (SREQOM), India and The Division of Operation and Maintenance, Lulea University of Technology, Sweden 2011.


Asplund M.,Trafikverket | Asplund M.,Lulea University of Technology | Palo M.,Lulea University of Technology | Famurewa S.,Lulea University of Technology | Rantatalo M.,Lulea University of Technology
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit | Year: 2016

The capacity demands on railways will increase in the future, as will demands for a robust and available system. The availability of a railway system is dependent on the condition of its infrastructure and rolling stock. To inspect rolling stock so as to prevent damage to the track due to faulty wheels, infrastructure managers normally install wayside monitoring systems along the track. Such systems indicate, for example, wheels that fall outside the defined safety limits and have to be removed from service to prevent further damage to the track. Due to the nature of many wayside monitoring systems, which only monitor vehicles at defined points along the track, damage may be induced on the track prior to fault detection at the location of the system. Such damage can entail capacity-limiting speed reductions and manual track inspections before the track can be reopened for traffic. The number of wheel defects must therefore be kept to a minimum. In this paper, wheel profile parameters measured by a wayside wheel profile measurement system, installed along the Swedish Iron Ore Line, are examined and related to warning and alarm indications from a wheel defect detector installed on the same line. The study shows that an increased wheel wear, detectable by changes in the wheel profile parameters, could be used to reduce the risk of capacity-limiting wheel defect failure events and their reactive measures. © IMechE 2014.


Stockholm Turns to BlipTrack Bluetooth and WiFi Sensors to Improve Road Network The Swedish capital has adopted BlipTrack queue and flow measurement technology from Denmark-based BLIP Systems. It provides the city with travel times and flow data to help alleviate congestion and provide road users with real-time traffic information. Stockholm, Sweden, February 22, 2017 --( Stockholm, the most populous city in Scandinavia, has joined a host of other major cities, including Bangkok, Zürich, Auckland and Copenhagen, that uses BlipTrack sensors to measure how road users travel and use the city's roads. Otto Astrand, Traffic Analyst at Trafik Stockholm, explains: “We use the collected data to display live travel times via Trafiken.nu, which is our traffic information hub, and on several VMS-signs placed around the city. The travel times help road users to make informed decisions about their journey, both in real-time and for those planning their daily commute.” The travel times are continuously updated, in line with the actual behaviour of road users, so, by considering their route and the time they depart, the motorists themselves are helping to reduce bottlenecks and keep the traffic moving. "We also use the data for measuring the development in traffic density, speed and congestion. South of Stockholm, where we first installed BlipTrack, will be a roadwork zone for many years ahead, when building the Stockholm Bypass. It will not only affect the main highway (E4) running through the work zone, but also the surrounding roads. With BlipTrack we are able to measure the capacity and traffic flow in real-time in and around the area. This allow us to take proactive steps, to initiate countermeasures, if traffic build-up should occur," continues Otto Astrand. "It also helps us to understand various traffic-related matters, such as the impact of traffic control, weather-related patterns, congestion patterns at roadworks, accidents and events, and driving behaviours and patterns. With this information, we can evaluate and validate existing traffic models and make informed decisions about where to prioritize expansions and optimizations to help the daily commute. "Measuring travel times over longer distances in complex traffic environments is complicated to do with our traditional sensors, such as Radar and microwave detectors. Bliptrack gives us insights on how much individual journeys can differ from each other, especially when traffic lights are involved. The ability to measure travel times over longer stretches of road with various queue lengths and only looking at specific route choices is another strength of the solution," ends Otto Astrand. Johanna Karlsson, CEO of Trafik Stockholm says, "We are always trying new technologies for traffic monitoring and BlipTrack compliments our other sensors and data sources very well. The ability to measure travel times, monitor queues and perform OD analysis, convinced us to adopt the solution for Stockholm. The ability to detect and mitigate disruptive events offers significant economic benefits through reduced travel times and fuel consumption, as well as environmental benefits due to reduced CO2 emissions and improved air quality." "The solution works by placing BlipTrack sensors at strategic points along the roads. The sensors detect Bluetooth and WiFi devices, found in mobile phones and in-car audio and communication systems. By identifying the devices at multiple sensors, specific and accurate statistical information, such as the travel times, average speeds, dwell times and movement patterns become available," explains Preben Andersen, Sales Manager at BLIP Systems. The city has recently expanded the solution to cover major roads north of Stockholm. About Trafik Stockholm: Trafik Stockholm is one of four traffic management centres in Sweden, monitoring traffic in eastern Sweden. Trafik Stockholm is a cooperation between the Swedish transport administration (Trafikverket), the city of Stockholm and Nacka kommun. The purpose of Trafik Stockholm is to optimize road usage and minimize delays due to accidents or incidents, for example via real-time traffic information. Each year Trafik Stockholm handles more than 20.000 events, 16.000 of those are within the Stockholm County. About BLIP Systems: BLIP Systems is an information technology company with headquarters near Aalborg, Denmark. The in-house designed BlipTrack solution is a sensor agnostic analysis platform with live and historical information in a web-based, intuitive user interface with compelling visualizations. From pedestrian and vehicular queue- and flow management to advanced capacity forecasting, BlipTrack provides decision makers in airports, road traffic, amusement parks, train stations and ski resorts with visibility and all the necessary tools to optimize staffing resources, improve revenue while maintaining a high level of customer service. BlipTrack is successfully employed in optimization efforts in more than 25 international airports, including Schiphol Airport in Amsterdam, JFK Airport in New York, Copenhagen, Oslo, Manchester, Dublin, Brussels, Geneva, San Diego, Keflavik and Edinburgh. The solution is also implemented in road traffic in Switzerland, Thailand, New Zealand, UK and Denmark. In recent years, it has been rolled out in ports in Denmark and UK, train stations in Holland and UK, ski resorts in the US, amusement parks in Denmark and UK, and at events all over the world. Stockholm, Sweden, February 22, 2017 --( PR.com )-- If you drive around Stockholm with a switched on Bluetooth or WiFi device, you are automatically helping your fellow motorists to enjoy a faster and less congested journey.Stockholm, the most populous city in Scandinavia, has joined a host of other major cities, including Bangkok, Zürich, Auckland and Copenhagen, that uses BlipTrack sensors to measure how road users travel and use the city's roads.Otto Astrand, Traffic Analyst at Trafik Stockholm, explains: “We use the collected data to display live travel times via Trafiken.nu, which is our traffic information hub, and on several VMS-signs placed around the city. The travel times help road users to make informed decisions about their journey, both in real-time and for those planning their daily commute.”The travel times are continuously updated, in line with the actual behaviour of road users, so, by considering their route and the time they depart, the motorists themselves are helping to reduce bottlenecks and keep the traffic moving."We also use the data for measuring the development in traffic density, speed and congestion. South of Stockholm, where we first installed BlipTrack, will be a roadwork zone for many years ahead, when building the Stockholm Bypass. It will not only affect the main highway (E4) running through the work zone, but also the surrounding roads. With BlipTrack we are able to measure the capacity and traffic flow in real-time in and around the area. This allow us to take proactive steps, to initiate countermeasures, if traffic build-up should occur," continues Otto Astrand."It also helps us to understand various traffic-related matters, such as the impact of traffic control, weather-related patterns, congestion patterns at roadworks, accidents and events, and driving behaviours and patterns. With this information, we can evaluate and validate existing traffic models and make informed decisions about where to prioritize expansions and optimizations to help the daily commute."Measuring travel times over longer distances in complex traffic environments is complicated to do with our traditional sensors, such as Radar and microwave detectors. Bliptrack gives us insights on how much individual journeys can differ from each other, especially when traffic lights are involved. The ability to measure travel times over longer stretches of road with various queue lengths and only looking at specific route choices is another strength of the solution," ends Otto Astrand.Johanna Karlsson, CEO of Trafik Stockholm says, "We are always trying new technologies for traffic monitoring and BlipTrack compliments our other sensors and data sources very well. The ability to measure travel times, monitor queues and perform OD analysis, convinced us to adopt the solution for Stockholm. The ability to detect and mitigate disruptive events offers significant economic benefits through reduced travel times and fuel consumption, as well as environmental benefits due to reduced CO2 emissions and improved air quality.""The solution works by placing BlipTrack sensors at strategic points along the roads. The sensors detect Bluetooth and WiFi devices, found in mobile phones and in-car audio and communication systems. By identifying the devices at multiple sensors, specific and accurate statistical information, such as the travel times, average speeds, dwell times and movement patterns become available," explains Preben Andersen, Sales Manager at BLIP Systems.The city has recently expanded the solution to cover major roads north of Stockholm.About Trafik Stockholm:Trafik Stockholm is one of four traffic management centres in Sweden, monitoring traffic in eastern Sweden. Trafik Stockholm is a cooperation between the Swedish transport administration (Trafikverket), the city of Stockholm and Nacka kommun. The purpose of Trafik Stockholm is to optimize road usage and minimize delays due to accidents or incidents, for example via real-time traffic information. Each year Trafik Stockholm handles more than 20.000 events, 16.000 of those are within the Stockholm County.About BLIP Systems:BLIP Systems is an information technology company with headquarters near Aalborg, Denmark. The in-house designed BlipTrack solution is a sensor agnostic analysis platform with live and historical information in a web-based, intuitive user interface with compelling visualizations. From pedestrian and vehicular queue- and flow management to advanced capacity forecasting, BlipTrack provides decision makers in airports, road traffic, amusement parks, train stations and ski resorts with visibility and all the necessary tools to optimize staffing resources, improve revenue while maintaining a high level of customer service.BlipTrack is successfully employed in optimization efforts in more than 25 international airports, including Schiphol Airport in Amsterdam, JFK Airport in New York, Copenhagen, Oslo, Manchester, Dublin, Brussels, Geneva, San Diego, Keflavik and Edinburgh. The solution is also implemented in road traffic in Switzerland, Thailand, New Zealand, UK and Denmark. In recent years, it has been rolled out in ports in Denmark and UK, train stations in Holland and UK, ski resorts in the US, amusement parks in Denmark and UK, and at events all over the world. Click here to view the list of recent Press Releases from BLIP Systems


Grimm M.,Trafikverket
WIT Transactions on the Built Environment | Year: 2012

The capacity utilisation in the Swedish rail network remains constantly high. The competition between approximately forty different railway operators applying for timetable slots continues. Trafikverket performs analysis of the railway capacity with different methods and tools. The calculation of the capacity utilisation is performed annually for the entire railway network. It is based on a common European standard described in the Capacity Leaflet UIC 406. This paper presents the implementation of this method in Sweden as well as the recent results. Trafikverket has, during the annual capacity allocation process, since the year 2007 declared different sections of the network congested. The capacity of congested sections is then analysed in order to find solutions for capacity shortages. Trafikverket performs timetable analysis with the tool TrainPlan and simulations with the tool Railsys. Trafikverket investigates the timetable robustness, calculates headways between trains operating on the double track and defines some guidelines for traffic planners. The Southern Main Line that connects the first and third biggest cities in Sweden- Stockholm and Malmö- has been congested during 2011. This paper presents the variety of methods used while analysing this congested line. In particular, the cooperation with Linköping University within the field of punctuality and timetable robustness is mentioned here, with particular focus on the punctuality studies of the Southern Main Line. © 2012 WIT Press.


Dijckmans A.,Catholic University of Leuven | Ekblad A.,Trafikverket | Smekal A.,Trafikverket | Degrande G.,Catholic University of Leuven | Lombaert G.,Catholic University of Leuven
Soil Dynamics and Earthquake Engineering | Year: 2016

This paper investigates the effectiveness of a sheet pile wall to reduce railway induced vibration transmission by means of field measurements and numerical simulations. At Furet, Sweden, a sheet pile wall has been installed in the soil near the track to reduce train induced vibrations in houses close to the track. The depth of the sheet piles is 12. m with every fourth pile extended to 18. m. The efficacy of the wall is determined from in situ measurements of free field vibrations during train passages before and after installation of the sheet pile wall. The field test shows that the sheet pile wall reduces vibrations from 4. Hz upwards. Up till 16-20 Hz, the performance generally increases with frequency and typically decreases with increasing distance behind the wall. The performance is further studied by means of two-and-a-half-dimensional coupled finite element-boundary element models. The sheet pile wall is modelled as an orthotropic plate using finite elements, while the soil is modelled as a layered halfspace using boundary elements. The sheet pile wall acts as a stiff wave barrier and the efficacy is determined by the depth and the stiffness contrast with soil. The reduction of vibration levels is entirely due to the relatively high axial stiffness and plate bending stiffness with respect to the horizontal axis of the sheet pile wall; the plate bending stiffness with respect to the vertical axis is too low to affect the transmission of vibrations. Therefore, it is important to take into account the orthotropic behaviour of the sheet pile wall. It is concluded that a sheet pile wall can effectively act as a wave barrier in soft soil conditions provided that the wall is sufficiently deep. © 2016 Elsevier Ltd.


Groten A.,Bilfinger Construction GmbH | Erixon P.A.,Trafikverket
Underground - The Way to the Future: Proceedings of the World Tunnel Congress, WTC 2013 | Year: 2013

The Cityline Project in Stockholm is another cross-city train tunnel project, similar to those that are being executed everywhere in the world. Developments of mass transportation systems have to follow the increased migration of humans from the countryside into big towns and thereby connect the surrounding hinterland to the towns. The northern tunnel lot of the Cityline is called Vasatunnel and Odenplan. Its 1700m is being executed between the Client and the Contractor in a cooperation contract. The authors are writing here not only about their experiences but also about room for improvement pertaining to that kind of cooperation contract. © 2013 Taylor & Francis Group.


Berggren E.G.,Trafikverket
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit | Year: 2010

Measured condition data may contain lots of information that is not efficiently used. By using techniques from the field of pattern recognition, this article outlines a methodology for eliciting new information. The methodology is demonstrated on a large set of condition data originating from track geometry quality, dynamic stiffness, and ground penetrating radar. The case study gives evidence for the importance of dynamic stiffness measurements as to determine soil- and embankment-related track problems, whereas problems originating from the upper part or the track structure do not benefit significantly.

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