Sweco Infrastructure AB

Stockholm, Sweden

Sweco Infrastructure AB

Stockholm, Sweden

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Bidar L.H.,Sweco Infrastructure AB | Carlsson L.,Swedish Transport Agency | Rasmussen S.,Soren Rasmussen
19th Intelligent Transport Systems World Congress, ITS 2012 | Year: 2012

As required by the EFC Directive (2004/52/EC) and EETS Decision (2009/750/EC) an EETS Provider shall perform verification of the interoperability constituent (OBE) within each EETS Toll Domain. The EETS Toll Domains within Norway, Sweden, Denmark and Austria are cooperating in an EFC interoperability service named EasyGo. The EasyGo Toll Chargers shall make available test facilities and support the EETS Provider in the OBE suitability for use process. The paper presents the concept and benefits of the EasyGo cooperation for the planning and performance of the EETS Suitability for use test.


Otterdahl D.,Sweco Infrastructure AB | Andersson M.,Swedish Transport Administration
19th Intelligent Transport Systems World Congress, ITS 2012 | Year: 2012

This paper describes the new open RSMP protocol and chosen design of for communication between UTC (Urban Traffic Control) system and local controllers (e.g. traffic signals). The new JSON-based [3] ITS-protocol for road-side ITS installations is developed by the Swedish Transport Administration (STA). The RSMP (Road Side Message Protocol) enables standardized means of communication (between systems on the local level and regional level) regardless of vendor or technical area. The paper also considers how sharing experiences in traffic signal control through regular informal "round table discussions" with the major cities in Sweden contributed to the development of an open protocol for ITS. After development work during 2011 a pilot project in cooperation with three major vendors started. In the same time specifications was made for a new matching UTC-system and a tendering took place. Although RSMP is generic for all ITS installation, focus in this paper is targets it's use with traffic signals.


Bidar L.H.,Sweco Infrastructure AB | Heidenstam P.V.,Swedish Transport Administration
19th Intelligent Transport Systems World Congress, ITS 2012 | Year: 2012

ITS has proven to be a useful tool in providing efficient, environmentally friendly and safe transportation systems within urban and non-urban areas. The Swedish Transport Administration developed in 2009 an ITS manual for transportation engineers and planners, as part of a national training programme. Through an open and informal cooperation between the Swedish Transport Administration and their Scandinavian peers in Norway and Denmark, this manual has been translated both in Norwegian and Danish. The paper focus on the cooperative process between the Scandinavian Roads Administrations and the specific adaptations made within each country.


Sevefelt B.,Swedish Transport Administration | Wessel P.,SWECO Infrastructure AB
19th Intelligent Transport Systems World Congress, ITS 2012 | Year: 2012

This paper will give a thoroughly description of the implementation of Variable Speed Limits in 12 intersections in the Swedish countryside. We will present the thoughts and ideas behind the Variable Speed Limit solution. We will also provide a picture of the traffic and technical solutions. And finally we will present the evaluated effects and suggestions for the future.


Lindfors U.,Itasca Consultants AB | Sjoberg J.,Itasca Consultants AB | Vedin P.,Swedish Transport Administration | Swindell R.,Swedish Transport Administration | And 3 more authors.
48th US Rock Mechanics / Geomechanics Symposium 2014 | Year: 2014

The Swedish Transport Administration is currently updating a handbook on the design of rock excavations for road and rail infrastructure. The aim of the handbook is to provide guidelines and practical engineering tools for the planning and design of rock mass excavations. This paper describes the content of the handbook regarding (i) description of the rules and regulations, and how these affect the design work of rock mass excavations, (ii) guidelines to describe the type of design activities that should be implemented during the planning, constructions and operational (management) stages, with respect to the design of the load- bearing structure, (iii) description of how the input data to the design can be developed and presented during various steps in the proccss, and (iv) description of suitable design methodology and appropriate design methods for reinforcement for rock tunnels and rock slopes. Copyright © 2014 ARMA.


Von Heidenstam P.,Swedish Transport Administration | Bidar L.H.,Sweco Infrastructure AB
20th ITS World Congress Tokyo 2013 | Year: 2013

The paper will present how ITS is promoted within the Swedish Transport Administration through various training and information initiatives. STA has undertaken a pre-study in order to evaluate and analyse the current ITS training package where the result will be used to develop the training program to target the various challenges and ITS deployment needs within the STA and in cooperation with external partners.


Bidar L.H.,Sweco Infrastructure AB | Holt A.G.,Statens vegvesen
18th World Congress on Intelligent Transport Systems and ITS America Annual Meeting 2011 | Year: 2011

ITS has proven to be a useful tool in providing efficient, environmentally friendly and safe transportation systems within urban and non-urban areas. The Swedish Transport Administration developed in 2009 an ITS manual for transportation engineers and planners, as part of a national training programme. Through an open and informal cooperation between the Swedish Transport Administration and their Scandinavian peers in Norway and Denmark, this manual has been translated both in Norwegian and Danish. The paper focus on the cooperative process between the Scandinavian Roads Administrations and the specific adaptations made within each country. © 2011 by the Intelligent Transportation Society of America.


Ormann L.,SWECO Infrastructure AB | Zardari M.A.,Lulea University of Technology | Mattsson H.,Lulea University of Technology | Bjelkevik A.,SWECO Infrastructure AB | Knutsson S.,Lulea University of Technology
Electronic Journal of Geotechnical Engineering | Year: 2011

A curved embankment (corner) of an upstream tailings dam was analyzed with the finite element method to identify possible zones of low compressive stresses susceptible to hydraulic fracturing that might initiate internal erosion. The embankment was also analyzed as a straight section, with the same cross section as in the corner, in order to compare compressive stresses in the corner and the straight section. The analysis showed that in comparison to the straight section of the dam, the compressive stresses in the corner were (i) much lower above the phreatic level, in the rockfill banks and the filter zones, and (ii) fairly lower below the phreatic level. The rockfill and the filter contain coarse materials, which are not sensitive to hydraulic fracturing and internal erosion. An increase in radius of the corner is proposed to avoid too low compressive stresses that may develop due to future raisings. The slope stability analysis showed that the corner is currently stable, but an additional rock fill bank on the downstream toe is required for future raisings. © 2011 ejge.


Najjar S.S.,American University of Beirut | Sadek S.,American University of Beirut | Alcovero A.,Sweco Infrastructure AB
Journal of Geotechnical and Geoenvironmental Engineering | Year: 2013

Several models have been suggested to estimate the improvement brought by fibers to the shear strength of fiber-reinforced sands. To date, the effectiveness and reliability of these models have not been the subject of a comprehensive evaluation. The objectives of this paper are to (1) compile the experimental data available in the literature on the behavior of fiber-reinforced sands into a comprehensive state-of-the-art database, (2) quantify the model uncertainty and bias of current strength prediction models for fiber-reinforced sands, and (3) provide insight regarding possible modifications that could be made to the formulation of available models to improve their predictive effectiveness and reduce their model uncertainty. Two models that are considered to present the best available approaches to predicting sand-fiber shear strength were evaluated, namely, the "energy-based" model and the "discrete" model. The energy-based model was found to underestimate the measured friction coefficient on average by about 10%, while the discrete model overestimated the friction coefficient by 6%, with associated coefficients of variation on bias values of 0.20 and 0.17, respectively. With the introduction of minor modifications to these models, the average bias error was eliminated, and the coefficients of variation in the ratio of predicted to measured shear strength (bias) were reduced to 0.17 and 0.12, respectively, for the two models. © 2013 American Society of Civil Engineers.


Gustafsson L.,Sweco Infrastructure AB | Archer J.,Sweco Infrastructure AB
Accident Analysis and Prevention | Year: 2013

Few naturalistic studies have been carried out with commuter cyclists to discover the types of problems they encounter on a daily basis. The study presented here has been commissioned by the City of Stockholm municipality and focuses specifically on commuter cyclists in the Greater Stockholm area. The aim of the study was to describe and pinpoint accessibility and safety problems, but also to generate an accessible geographical interface that could serve as a traffic planning tool for cycle network improvement. Statistical surveys in the Stockholm area have shown a rapid growth in the number of cyclists as well as an increase in problems associated with an overburdened cycle infrastructure. Given the heightened emphasis on transport system sustainability, the City of Stockholm is faced with the challenging task of trying to maintain and encourage the upward trend in commuter cycling through a process that involves problem identification, classification, prioritisation and resolution. An innovative methodology involving the use of GPS logging devices and small video cameras was developed and supported with analysis software designed specifically for the purposes of this study. Experienced commuter cyclists were recruited to cycle 17 different major cycle routes to and from the suburbs and inner city area during morning and afternoon peak traffic hours during the main cycle season. Over 500 safety and accessibility/mobility problems were identified and recorded from the data collected from 16 commuter cyclists. The method and representation of data proved successful for strategic traffic planning work at City of Stockholm and has since provided invaluable input for and the development of a new cycle plan for Greater Stockholm. Indirectly, the results of this work have also contributed to longer term safety and environmental targets. © 2012 Elsevier Ltd. All rights reserved.

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