Blar i Vitenskapelige artikler /Academic Articles på forfatter "Weber, Christian"
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Comparison of regulated emission factors of Euro 6 LDV in Nordic temperatures and cold start conditions: Diesel- and gasoline direct-injection
Weber, Christian; Sundvor, Ingrid; Figenbaum, Erik (Peer reviewed; Journal article, 2019-03-05)Local air pollution in Norwegian wintertime is characterized by an increase in NO2 concentrations, due to poor dispersion and increased vehicle emissions. The focus of this study is therefore the characterisation of exhaust ... -
Empirical speed models for cycling in the Oslo road network
Flugel, Stefan Markus; Hulleberg, Nina; Fyhri, Aslak; Weber, Christian; Ævarsson, Grétar (Journal article; Peer reviewed, 2017-11-23)Knowing the speed at which a cyclist travels is important in route and mode choice modelling. Empirical evidence suggests that it varies significantly in accordance with—among other things—infrastructure and topology. ... -
Estimating Real-World Emissions of PHEVs in Norway by Combining Laboratory Measurement with User Surveys
Figenbaum, Erik; Weber, Christian (Journal article; Peer reviewed, 2018-08-10)The paper presents the results of experimental testing of the exhaust emission and energy consumption of two gasoline plug-in hybrid vehicles in an emission testing laboratory with different drive cycles and drive modes ... -
Estimating the replacement potential of Norwegian high-speed passenger vessels with zero-emission solutions
Sundvor, Ingrid; Thorne, Rebecca Jayne; Danebergs, Janis; Aarskog, Fredrik Gundersen; Weber, Christian (Journal article; Peer reviewed, 2021-09-06)High-speed passenger vessels have high greenhouse gas emissions per passenger kilometre travelled and require optimizations to provide a role in a low carbon society. This article works towards this goal as a study of the ... -
Monitoring Euro 6 diesel passenger cars NOx emissions for one year in various ambient conditions with PEMS and NOx sensors
Söderena, Petri; Laurikko, Juhani; Weber, Christian; Tilli, Aki; Kuikka, Keijo; Kousa, Anu; Väkevä, O.; Venho, Antti; Haaparanta, Suvi; Nuottimäki, Jukka (Peer reviewed; Journal article, 2020-07-23)In this study, the NOx emissions of four Euro 6 diesel passenger cars ranging from Euro 6 b to Euro 6 d-TEMP in different ambient conditions and driving routes were investigated with a Portable Emissions Measurement System ... -
Risk compensation theory and bicycle helmets – Results from an experiment of cycling speed and short-term effects of habituation
Fyhri, Aslak; Sundfør, Hanne Beate; Weber, Christian; Phillips, Ross Owen (Peer reviewed; Journal article, 2018-06-30)It has been suggested that the safety benefits of bicycle helmets are limited by risk compensation. The current study contributes to explaining whether the potential safety effects of bicycle helmets are reduced by cyclists’ ... -
Road infrastructures, spatial surroundings, and the demand and route choices for cycling: Evidence from a GPS-based mode detection study from Oslo, Norway
de Jong, Tineke; Böcker, Lars; Weber, Christian (Journal article; Peer reviewed, 2022-11-28)To achieve a higher cycling uptake, it is essential for planners to know what kind of cycling infrastructure to plan and where, that is, through which types of urban environments. In this paper, we provide a deeper ...