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In search of the severity dimension of traffic events: Extended Delta-V as a traffic conflict indicator
(Journal article; Peer reviewed, 2016-09-28)Most existing traffic conflict indicators do not sufficiently take into account the severity of the injuries resulting from a collision had it occurred. Thus far, most of the indicators that have been developed express the ... -
Does Regular School Transport Influence the Provision of Public Transport Services? Evidence From Norway
(Journal article; Peer reviewed, 2019-06-13)Basic education and public transport services are often provided by local or regional governments. In Norway, they fall within the remit of two different tiers of government, with public transport being the responsibility ... -
Road safety effects of roundabouts: A meta-analysis
(Journal article; Peer reviewed, 2017-01-05)This paper presents a meta-analysis of the road safety effects of converting junctions to roundabouts. 44 studies containing a total of 154 estimates of effect were included. Based on a meta-regression analysis, converting ... -
A comprehensive and unified framework for analysing the effects on injuries of measures influencing speed
(Journal article; Peer reviewed, 2019-02-04)This paper proposes a comprehensive and unified framework for analysing the impacts on traffic injury of measures influencing speed. The key tool for analysis is a specification of the speed distribution, which in most ... -
Axioms of a Polluting Technology: A Materials Balance Approach
(Journal article; Peer reviewed, 2015-10-17)This paper aims to present an economic model characterized by a set of axioms that are consistent with the laws of thermodynamics. Two new axioms—weak G-disposability (i.e., weak directional disposability) and output ... -
Environmental regulations and allocative efficiency: application to coal-to-gas substitution in the U.S. electricity sector
(Journal article; Peer reviewed, 2017-02-23)The environmental economics literature has for a long time been occupied with the relationships between environmental regulations, technical efficiency, and productivity growth. This paper extends this discussion by taking ... -
A CO2-fund for the transport industry: The case of Norway
(Journal article; Peer reviewed, 2016-09-02)Emissions from heavy trucks constitute a large and increasing share of Norwegian CO2-emissions. The Norwegian Green Tax Commission recently presented recommendations for emission reductions, largely confined to ‘sticks’, ... -
Combining roadside interviews and on-road observation for assessing prevalence of driver inattention
(Journal article; Peer reviewed, 2019-02-05)Inattention among car drivers on a motorway section with two lanes in each direction was investigated by a combination of two different methodological approaches. First, an observer in a driving car in the non-passing ... -
Traffic safety culture among bicyclists - Results from a Norwegian study
(Journal article; Peer reviewed, 2014-05-29)This paper reports results from a study of traffic safety culture (TSC) among bicyclists (N = 231) in Oslo, Norway. The aims of the study are to examine whether respondents’ TSC in relation to bicycling is related to the ... -
Troublesome trade-offs: balancing urban activities and values when securing a city-centre governmental quarter.
(Journal article; Peer reviewed, 2015-04-18)Background Homeland security measures increasingly affect urban life and activities. Standoff distance, which prevents unscreened vehicles from approaching within a certain distance of a building, is a widely applied measure ... -
Safety culture, working conditions and personal injuries in Norwegian maritime transport
(Journal article; Peer reviewed, 2017-08-14)The aim of the study is to examine the influence of safety culture and working conditions on personal injuries and risk perception on vessels sailing along the coast of Norway (mostly bulk, well and general cargo). The ... -
Efficiency measurement when producers control pollutants: a non-parametric approach
(Journal article; Peer reviewed, 2014-01-18)This paper treats efficiency measurement when some outputs are undesirable and producers control pollutants by end-of-pipe or change-in-process abatement. A data envelopment analysis framework that compares producers with ... -
Risk and irreversibility of transport interventions
(Journal article; Peer reviewed, 2013-11-09)Infrastructure decisions and transport policies are often based on the notion that all decisions are made at one single point in time, based on full information and an accurate evaluation of the benefits and costs of ... -
The role of life events and context in type of car share uptake: Comparing users of peer-to-peer and cooperative programs in Oslo, Norway
(Journal article; Peer reviewed, 2019-01-25)This paper builds on a survey of existing users of two car sharing schemes in Oslo, namely Nabobil (peer-to-peer scheme P2P) and Bilkollektivet (cooperative scheme Coop), to understand how the following factors lead to ... -
How to road price in a world with electric vehicles and government budget constraints
(Journal article; Peer reviewed, 2018-10-13)In this paper we examine what characterizes second-best road prices targeting external costs from driving electric (EV) and conventional (ICEV) vehicles when there are distortionary labor taxes and binding government budget ... -
The safety ladder: developing an evidence-based safety management strategy for small road transport companies
(Journal article; Peer reviewed, 2017-07-08)Traffic accidents account for between 20% and 40% of work-related accidents in industrial countries, and research indicates that road transport companies often have little focus on organisational safety management (OSM). ... -
Productivity growth in urban freight transport: An index number approach
(Journal article; Peer reviewed, 2017-03-18)Improvement of operational efficiency is a common goal of most governmental freight transport policies. Productivity and efficiency analysis consequently provides a sound knowledge base. This paper illustrates how axiomatic ... -
Self-reported deterrence effects of the Norwegian driver's licence penalty point system
(Journal article; Peer reviewed, 2019-02-05)Norway’s penalty point system implies that traffic infractions are penalised with two or three points for full-licence drivers and four or six points for probationary-licence drivers, and when a total of eight points is ... -
Traffic accidents triggered by drivers at work - A survey and analysis of contributing factors
(Journal article; Peer reviewed, 2015-08-26)This report outlines the results of a study of severe road traffic accidents in Norway, triggered by drivers at work. The aim has been to examine whether and to what extent risk factors of these triggering drivers and their ... -
A push for public health: the effect of e-bikes on physical activity levels
(Journal article; Peer reviewed, 2017-10-16)Background Cycling is considered to have a positive effect on public health through increased physical activity. In Norway, the e-bike is seen as a way of getting more people to cycle. However, the motorized assistance of ...