Göran Blomqvist


Picture of Göran Blomqvist

Research results from Göran


Driftåtgärder mot PM10 i Stockholm: utvärdering av vintersäsongen 2015–2016

Since 2011, Stockholm has made special efforts to reduce PM10 levels in the city. The efforts mainly include dust binding with CMA (calcium magnesium acetate) and vacuum suction with a powerful dry vacuum suction machine. This report summarizes...

Modelling road dust emission abatement measures using the NORTRIP model: Vehicle speed...

Road dust emissions in Nordic countries still remain a significant contributor to PM10 concentrations mainly due to the use of studded tyres. Measures to reduce road dust emissions include speed reductions, reductions in studded tyre use, dust...

Road salt emissions: A comparison of measurements and modelling using the NORTRIP road...

De-icing of road surfaces is necessary in many countries during winter to improve vehicle traction. Large amounts of salt, most often sodium chloride, are applied every year. Most of this salt is removed through drainage or traffic spray processes...

Particles in road and railroad tunnel air: sources, properties and abatement measures

High levels of air pollution are a common problem in both road and railroad tunnels. Sources and emission processes however differ significantly, as reflected by aerosols physical and chemical properties. As particle concentrations and properties...

Driftåtgärder mot PM10 i Stockholm: utvärdering av vintersäsongen 2014–2015

Since 2011, intensified efforts are made to reduce the levels of PM10 in Stockholm. This report presents results and evaluation of the efforts made during the winter season 2014–2015. The season has the lowest PM10 concentrations and the lowest...

Driftåtgärder mot PM10 i Stockholm: utvärdering av vintersäsongen 2013–2014

Since 2011, intensified efforts are made to reduce levels of PM10 in Stockholm, where the problems are extensive. This report includes the results and evaluation of the measures taken during the winter season 2013–2014. The lowest PM10 levels since...

Mätning av luftkvalitet vid TestSite E18

Measurements of air quality (PM10 and NOx (NO and NO2)) were made during the period 2013-03-16 to 2014-03-26 at TestSite E18, situated along the E18 highway between Västerås and Enköping. At TestSite E18 continuous measurements of traffic (eastbound...

Driftåtgärder mot PM10 i Stockholm: utvärdering av vintersäsongen 2012–2013

Sweden is exceeding the limit values in the EU air quality directives and an important cause is the high concentrations of inhalable particles (PM10) that occurs during winter and spring. Wear of road pavements and winter operation like sanding are...

Landscape heritage objects' effect on driving: a combined driving simulator and...

According to the literature, landscape (panoramas, heritage objects e.g. landmarks) affects people in various ways. Data are primarily developed by asking people (interviews, photo sessions, focus groups) about their preferences, but to a lesser...

Transportforum 2013: granskade artiklar

At Transportforum 2013 the participants had the opportunity to send in a manuscript for peer review. The papers have been reviewed by the members of the subject committees. Out of 40 notifications of interest, nine papers were published. Three of...

Slitage av och partikelemissioner från betongbeläggning

This report aims to study wear and the formation of inhalable particles from concrete coating, concrete coating with mixed in titanium dioxide (TiOmix) and from a reference asphalt (SMA16) under controlled conditions in the VTI road simulator (PVM)....

Crash Barriers and Driver Behavior: A Simulator Study

Objective: The study examines how drivers experience a conventional W-beam guardrail (metal crash barrier) along both sides of narrow versus wider roads (single carriageway with 2 lanes) in terms of stress, feelings, and driving patterns and whether...

Klimatanpassning av vägkonstruktion, drift och underhåll

The global climate change is a reality and affecting society and transport systems. Climate change adaptation of transport systems will make the means of transportation more resilient and decrease the risk and magnitude of disruptions. Generally,...

Driftåtgärder mot PM10 på Hornsgatan och Sveavägen i Stockholm: utvärdering av...

Several Swedish cities have problems with complying with the environmental quality standard for inhalable particulate matter in air (PM10). Stockholm has a number of problematic traffic environments with narrow street canyons and high traffic flows,...

Inhalable railroad particles at ground level and subterranean stations: physical and...

The paper compares PM10 concentrations in railroad environments with EU air quality standards and characterizes particle concentrations and particle properties in relation to train traffic. The results show that PM10 concentrations in ground-level...

Road surface wetness as affected by evaporation, surface runoff and traffic splashing

Road surface wetness governs the fate of pollutants on the road surface. The wetness is also important for estimating the risk of ice formation during winters. The road surface water is affected by evaporation, run-off and traffic induced splash and...

Observationer av funktionskonflikter mellan miljö och drift och underhåll av vägar

The aim of this project was to increase the knowledge of functional conflicts between the environment and the operation and maintenance of roads. Functional conflicts may arise for example, when operation and maintenance measures are interfering...

NORTRIP - Non-exhaust road traffic induced particle emissions: development of a model for...

The PM10 concentrations exceed the EU limit values in almost all countries in Europe. Especially, in many Nordic cities, non-exhaust particle emissions are the main reason for high PM10 levels along densely trafficked roads. This is connected to the...

The impact of climate change on the use of anti- and de-icing salt in Sweden

The future needs for winter maintenance will probably be influenced by the climate change in different ways in different parts of the world. As Sweden is a country with several climate zones, the influence of climate change on winter maintenance...

Damningsminimerad vinter- och barmarksdrift: mått, medel och strategier

A great deal of the inhalable particulate matter (PM10) problems in Sweden has been shown to result from wear particles from traffic, but also from winter sanding. The problem with high concentrations of PM10 thus originates in traffic safety and...

Vägbeläggningars damningsbenägenhet

Since 2005 Sweden has an environmental quality standard for inhalable particles (PM10), based on an EC directive. In Sweden, road dust is an important local source of norm exceedance, which has highlighted the negative effects of studded tyres, but...

Tema miljörisker: miljörisker och trafikanters beteenden

This report compiles the results from the project Theme Environmental risks. More specifically, the project concerned how different transport related environmental risks influence different road users and how their behaviour influence the...

Utvärdering av städmaskiners förmåga att minska PM10-halter

In this project three road sweepers' effect on PM10 concentrations in ambient air and on the road surface has been tested. Two studies have been carried out; one in street environment at Sveavägen in central Stockholm, Sweden, and one with...

Wear particles from road pavements with rubber mixed bitumen: comparison with reference...

Studded tyre wear of road pavements causes emissions of inhalable particles (PM10). Allowed concentration of PM10 is regulated by an EU directive which is implemented in an environmental quality standard in Sweden. One way of reducing pavement wear...

Effekter av dammbindning av belagda vägar

Inhalable particles from road dust is a health problem and a major cause of the environmental quality standard for particles in outdoor air not being reached in Sweden. Formation of road dust along paved roads in the Nordic countries is largely...

The environmental sub-model of the Swedish Winter Model: updated algorithms for the...

Modeling the impact of the use of chemical anti-/deicing on the roadside environment requires knowledge of the roadside exposure to salt, the vulnerability or dose-response relationship of the modeled environmental subjects and, preferably, the...

Slitagepartiklar från vägbeläggning med gummiinblandad bitumen: jämförelser med...

Studded tyre wear of road pavements cause emissions of inhalable particles (PM10). Allowed concentration of PM10 is regulated by an EU directive which is implemented in an environmental quality standard in Sweden. One way of reducing pavement wear...

Road dust and air quality in Sweden

During the last years it has become evident that wear particles from road pavements, tires, brakes, and road maintenance strongly contribute to episodes with very high concentration of inhalable particles (PM10) in outdoor air. These episodes...

Winter model: roadside salt exposure under different weather conditions

The environmental model is a submodel in the Swedish winter maintenance management system, the Winter Model. The Winter Model will make it possible to assess the most important effects and their monetary value of changes in winter maintenance...

Wet dust sampler: technological innovation for sampling particles and salt on road surface

A new technique to sample dust on road surfaces is presented. It is based on the use of water to wash a road surface, hence the name wet dust sampler (WDS). The sample water is collected allowing for a range of analyses. The WDS is a prototype, and...

Tema Vintermodell: etapp 2, huvudrapport

The aim of the Winter Model is to estimate and put a value on the most important impacts of the strategies and measures in winter road management for road users, road management authorities and society at large. The main report itself is a summary...

Traffic-generated emissions of ultrafine particles from pavement-tire interface

In a road simulator study, a significant source of sub-micrometer fine particles produced by the road-tire interface was observed. Since the particle size distribution and source strength is dependent on the type of tire used, it is likely that...

Tema Vintermodell


Modeling the exposure of roadside environment to airbone salt: Case study

A field study was performed in order to investigate the relationships between the salt use, the mechanisms affecting the salt emission, dispersion and the salt exposure in a modeling approach. The salt was collected on gauze filter salt vanes at...

Föroreningsnedfall från järnvägstrafik

Environmental and health hazards, caused by exposure to particulate matter, have received increased attention in recent years. Railways can also be a source of particulate matter, which has been highlighted for instance where problems with dusting...

Bedömning av skada på bevarandeintressen: ett kunskapsunderlag inför en metodutveckling

Assessment of damage to heritage assets is often a weak element in environmental impact assessments (EIA). General method development is needed in this respect as support for the authors of analyses and descriptions for road projects. The task of...