Standardized corrections for temperature influence on tire/road noise

Air, tire and road temperatures substantially affect tire/road noise emission. For measuring purposes one would like to normalize measurements to a reference temperature of (say) 20 oC. This paper describes and examines the semi-generic temperature correction procedure which is presently considered for standardization in the ISO working group ISO/TC 43/SC 1/WG 27.

Based on a lot of research and extensive data compilations, the WG now thinks that it has sufficiently consistent data for proposing corrections to noise levels from measured air temperatures to a reference air temperature of 20 oC. Much of the recent work has been conducted in the ongoing European project ROSANNE. The drafts under production distinguish between two major cases: CPX (or OBSI) measurements and SPB measurements of pavement noise properties.

The paper describes what kind of data that have been used to make the decisions, their justifications, and presents the suggested temperature coefficients for various cases (i.e. for various reference tires, pavement types and the CPX/SPB methods).



Vision Zero for Sustainable Road Safety in the Baltic Sea Region

The conference Vision Zero for Sustainable Road Safety in the Baltic Sea Region is held i Vilnius, Lithuania. VTI is part of the organisation committé and also one of the speakers.



EU-project VIRTUAL: improving road safety with virtual crash tests

Crash tests are used to improve safety on roads. Therefore the EU now funds a research project to develop virtual methods of crash testing. VTI coordinates the project, called VIRTUAL. The project now invites experts interested in Human Body Modeling to join...


EU project protects cyclists and pedestrians

According to the World Health Organisation, more than one quarter of road traffic fatalities in 2010 were pedestrians and cyclists. Every year, about 335,000 unprotected road users die because of traffic accidents, which shows the scale of the problem. The EU...


Swedish organisations in EU project on traffic safety and crash testing

Crash safety testing is one of the tools used to improve safety on roads. The EU is therefore funding a research project that started recently to develop virtual methods of crash testing. The long-term goal is to supplement the physical evaluation of crash...


International Conference on Electric Road Systems starts today

Electric Road Systems (ERS) is a relatively new concept with many initiatives on the way. To learn from each other and stimulate new collaborations the Swedish Research and Innovation Platform for Electric Roads arranged the first international conference...


Same survey of road users’ attitudes in 50 countries

At the Road Safety on Five Continents Conference, RS5C, one entire session presented a large survey of road users' attitudes in 38 countries. Results show large differences between countries in many areas, both regarding behavior and attitudes. A new survey...


Good results with alcohol interlock program according to Swedish study

An alcohol interlock program makes it possible for drink driving offenders to continue their everyday lives. In a Swedish study most of the participants were satisfied with the program and experienced improved health. They also reported drinking alcohol more...