Tema Vintermodell: väglagsmodellen

Download
Staffan Möller

The Road Condition Model is the central part of the Winter Model. The reason for this is that it produces input data for most of the models that describe effects of different kinds, such as accident risks, travel times, fuel consumption and environmental impact. The road condition model supplies a condition assessment for a winter in the form of a road condition description on an hourly basis. According to the requirements of the client, the road condition model is confined to describing road conditions for two-lane roads with oncoming traffic in rural areas. At this stage, the model is also confined to describing road conditions in the traffic lane. No account is thus taken of hard shoulders, if any. The aim of the project is to develop a working prototype to the definite road condition model. The road condition model consists of the following sub models. The first five are related to maintenance measures taken and the last four to traffic and weather. 1. Anti-icing treatment. - 2. Snow ploughing combined with anti-icing treatment. - 3. Snow ploughing. - 4. Gritting. - 5. Grading. - 6. Rut development in hard-packed snow or thick ice. - 7. Condensation. - 8. Splashing from a wet road. - 9. Drying of a moist road.

MEET US


25-26
Apr

Cost Benefit Analysis (CBA) workshop in Stockholm

An open seminar and workshop in Stockholm will be held on 25-26 April 2018. The workshop deals with the use of CBA as a basis for decision-making in the public sector. The workshop is organized by, among others, Professor Jan-Eric Nilsson, VTI.

LATEST NEWS


2018-02-19

Modal shift for an environmental lift?

Investigations in Sweden and other countries suggest a shift of goods transport from road to rail and waterborne transport to reach environmental and climate objectives. VTI is leading a new project to investigate how the modal shift can contribute and what...


2018-02-13

Automation and digitalisation are making rail competitive

Road transport is developing rapidly and its productivity has increased sharply. Rail transport, however, has not developed at the same rate. Automation and digitalisation are essential if rail freight in Europe is to survive.


2018-02-08

New research is creating a driverless logistics chain

The research project Born to Drive has come up with a system that allows new cars to move, without a driver, from the production line out to the parking area prior to being transported elsewhere. The vision is to automate the entire logistics chain from...


2018-02-05

VTI testing automation in EU project

VTI is leading a series of tests in a major EU project on automated driving. The first driving tests were carried out n a test track in Slovenia in December. The project will focus in part on acceptance among different groups in society, in part on...


2018-02-02

Freight transportation on road and rail analysed

Freight transport accounts for a large proportion of the emissions, noise and congestion produced by road traffic. Transporting freight in larger but fewer lorries could reduce the problem. At the same time it might entail freight being diverted from more...


2017-11-30

Millions for research into maritime transport and the environment

Maritime transport is a major source of emissions of harmful air pollutants and carbon dioxide. In a new project, a research team from the Swedish National Road and Transport Research Institute (VTI) and the University of Gothenburg has received SEK 6.4...