Browsing SINTEF Open by Author "Hjelkrem, Odd Andre"
Now showing items 1-20 of 21
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An Estimator for Traffic Breakdown Probability Based on Classification of Transitional Breakdown Events
Arnesen, Petter; Hjelkrem, Odd Andre (Journal article; Peer reviewed, 2017)In this paper we propose a new estimator for calculating the probability of traffic breakdown as a function of traffic demand. Traffic breakdown is a well-studied phenomena within previous literature and is of great ... -
A battery electric bus energy consumption model for strategic purposes: Validation of a proposed model structure with data from bus fleets in China and Norway
Hjelkrem, Odd Andre; Lervåg, Karl Yngve; Babri, Sahar; Lu, Chaoru; Södersten, Carl-Johan Hugo (Peer reviewed; Journal article, 2021)In this paper, an energy model for battery electric buses (Ebus) is proposed. The model is developed based on established models for longitudinal dynamics, using event-based low-frequency data. Since the energy model is ... -
Bedre mobilitet med selvkjørende buss på Sula. Forprosjekt
Lervåg, Lone-Eirin; Lillestøl, Per J; Suul, Jon Are Wold; Fagerholt, Randi Ann; Hjelkrem, Odd Andre; Olsen, Martin Fredrik; Dahl, Dahl (SINTEF rapport;2022:00321, Research report, 2022)Rapporten dokumenterer resultater fra et forprosjekt i Frøya kommune, hvor formålet har vært å frembringe et nødvendig kunnskapsgrunnlag for realisering av et transporttilbud med selvkjørende buss for øysamfunnet på Sula. ... -
Characterisation of Norwegian Battery Electric Vehicle Owners by Level of Adoption
Bjørge, Nina Møllerstuen; Hjelkrem, Odd Andre; Babri, Sahar (Peer reviewed; Journal article, 2022)In this paper we investigate differences between groups of Norwegian electric vehicle owners, sorted by their adoption level. The grouping is based on adoption theory and the share of battery electric vehicles in new car ... -
Cube – Regional persontransportmodell versjon 4.4
Tørset, Trude; Malmin, Olav Kåre; Flaata, Ellen Heffer; Hjelkrem, Odd Andre (SINTEF;2021:01297, Research report, 2022)Denne rapporten beskriver persontransportmodellen Cube/RTM versjon 4.4. Rapporten er ment som en overordnet beskrivelse av modellen med prinsippbeskrivelse av de ulike mekanismene i modellen. Rapporten er delt inn i ... -
E-commerce and prevalence of last mile practices
Bjerkan, Kristin Ystmark; Bjørgen, Astrid; Hjelkrem, Odd Andre (Peer reviewed; Journal article, 2020)This study uses survey data collected from 500 individuals in the capital region of Norway to unveil demographic properties, travel behavior and last mile practices among e-commerce users. The study shows several correlations ... -
Elektrifisering av korte, tunge transporter. Med casestudier fra Trondheim og Oslo.
Hjelkrem, Odd Andre; Kristensen, Terje (SINTEF Rapport;2017:00605, Research report, 2017) -
Energikart. Et verktøy for å beregne, visualisere og analysere energibruk i transportsektoren i Norge
Hjelkrem, Odd Andre; Rennemo, Ola Martin; Dahl, Erlend; Malmin, Olav Kåre; Babri, Sahar; Karlsson, Hampus (SINTEF;2021:00827, Research report, 2022)Denne rapporten er en dokumentasjon av arbeidet som er gjort i forbindelse med å etablere energikart for Norge, som vist på http://mobilitet.sintef.no/energikart/. Energikartet inneholder en grafisk fremstilling av ... -
Energy and infrastructure - demands and requirements
Rennemo, Ola Martin; Hjelkrem, Odd Andre; Kristensen, Terje; Suul, Jon Are Wold; Brauhaus, Peter; Aamodt, Arne (Research report, 2018) -
Estimation of tank-to-wheel efficiency functions based on type approval data
Hjelkrem, Odd Andre; Arnesen, Petter; Bø, Torstein Ingebrigtsen; Sondell, Rebecka Snefuglli (Peer reviewed; Journal article, 2020)The representation of tank-to-wheel efficiency is for many modelling purposes simplified to a constant value. However, the relationship between tank-to-wheel efficiency and operational properties is not necessarily constant. ... -
Estimation of tank-to-wheel efficiency functions based on type approval data
Hjelkrem, Odd Andre; Arnesen, Petter; Bø, Torstein Ingebrigtsen; Sondell, Rebecka Snefuglli (Journal article; Peer reviewed, 2020-10-15)The representation of tank-to-wheel efficiency is for many modelling purposes simplified to a constant value. However, the relationship between tank-to-wheel efficiency and operational properties is not necessarily constant. ... -
Framtidig sykehusstruktur. Helgelandssykehuset Vurdering av alternative plasseringer av sykehus og distriktsmedisinske sentre
Rohde, Tarald; Bergsdal, Håvard; Hjelkrem, Odd Andre (SINTEF Rapport, Research report, 2019)I oktober 2014 forelå en utviklingsplan for Helgelandssykehuset fram til 2025. Den beskriver antatt behov for sykehustjenester i 2025 og viser hvordan disse kan dekkes med ulike alternativer som alle konsentrerer seg om ... -
Hjemlevering av mat og dagligvarer i Oslo og Akershus. Resultater fra en telefonundersøkelse.
Bjerkan, Kristin Ystmark; Hjelkrem, Odd Andre; Bjørgen, Astrid (SINTEF Rapport;2019:00654, Research report, 2019)Rapporten ser på sammenhengen mellom reisevaner og forbrukervaner til E-handel av matvarer. Studien baserer seg på telefonintervju med 501 forbrukere som har benyttet seg av hjemlevering av dagligvarer og/eller matkasser ... -
Increased electrification – new generators and consumers. Nordic Energy Outlooks - Final report WP2
Andersen, Simon Brøndum; Andersen, Kristoffer Steen; Belsnes, Michael Martin; Haaskjold, Kristina; Hjelkrem, Odd Andre; Johansson, Sara; Klugman, Sofia; Löffler, Konstantin Emanuel; Mata, Érika; Sandvall, Akram; Schmidt, Sarah Yvonne; Seljom, Pernille Merethe Sire; Vågerö, Oskar; Zeyringer, Marianne; Mathisen, Siri Gulaker; Wolfgang, Ove (Research report, 2022) -
Investigating the Technological and Political Challenges of V2V Communication in Light of an Experimental Scenario Set Up
Arnesen, Petter; Dahl, Erlend; Hjelkrem, Odd Andre; Seter, Hanne (Peer reviewed; Journal article, 2021)The suggested benefits of automated vehicles are plentiful, but many of the benefits depend on connectivity with other vehicles and infrastructure to be useful to the society at large. This paper identifies two main research ... -
Kjøretøybasert beregning av fart, energi og utslipp
Hjelkrem, Odd Andre; Arnesen, Petter; Rennemo, Ola Martin; Dahl, Erlend; Thorenfeldt, Unn Karin; Kroksæter, Anders; Kristensen, Terje; Malmin, Olav Kåre (SINTEF Rapport;2017:00031, Research report, 2017) -
LambdaRoad - Summarizing the main findings of work package 1: System and organizational requirements for CCAM"
Arnesen, Petter; Foss, Trond; Håkegård, Jan Erik; Hjelkrem, Odd Andre; Fagerholt, Randi Ann; Lie, Arne; Seter, Hanne (SINTEF rapport;2020:00884, Research report, 2020)This report isa collection of the memos written in work package 1 of the LambdaRoad project, where the overall project objectives is to study the need and requirements for electronic communication (ecom) in the future ... -
Mobile phone data in transportation research: methods for benchmarking against other data sources
Landmark, Andreas D.; Arnesen, Petter; Södersten, Carl-Johan Hugo; Hjelkrem, Odd Andre (Peer reviewed; Journal article, 2021)The ubiquity of personal cellular phones in society has led to a surging interest in using Big Data generated by mobile phones in transport research. Studies have suggested that the vast amount of data could be used to ... -
Mobility Analytics - Undersøkelse av mobildata for Ruter AS
Arnesen, Petter; Landmark, Andreas D.; Hjelkrem, Odd Andre; Södersten, Carl-Johan Hugo (Prosjektnotat;N-07/19, Research report, 2019)Hovedhensikten i dette prosjektet har vært «å utforske analysemulighetene dataen fra teleoperatørene kan gi [Ruter], og sammenlikne kvaliteten på datagrunnlaget med dagens datagrunnlag fra reisevaneundersøkelsene (MIS)». ... -
A proposed methodology for modelling the combined load of electric roads and households for long-term grid planning
Berg, Kjersti; Hjelkrem, Odd Andre; Torsæter, Bendik Nybakk (International Conference on the European Energy Market;2020, Chapter; Peer reviewed, 2020)The number of electric vehicles (EV) is increasing rapidly, and it is not yet sure how the grid infrastructure will be built, and how this will affect the power system. One option for charging EVs is a dynamic wireless ...