Calibration of the Swedish studded tyre abrasion wear prediction model with implication for the NORTRIP road dust emission model

Joacim Lundberg,Sara Janhäll,Mats Gustafsson,Sigurdur Erlingsson

doi:10.1080/10298436.2019.1614585

Abstract

ABSTRACT An experimentally based prediction model of road abrasion wear due to studded tyres is available in Sweden and has been found to work well. However, it has not been validated since 2007, and since then road surfaces and tyre design have developed, and the question has arisen regarding the model’s current validity. The abrasion wear model is used in the NORTRIP emission model (NOn-exhaust Road Traffic Induced Particle emission modelling), and the effect of a recalibrated abrasion wear model on the emission model is shown. In this paper, the abrasion wear model is compared to full-scale field measurements at several recently constructed roads in Sweden to investigate its validity, while also proposing changes to allow for continued use. It is concluded that the model overestimates the wear and an update is suggested. In addition, the impact on NORTRIP emission predictions is briefly investigated. There were also indications that NORTRIP is affected by the abrasion model overestimating the contribution of pavement wear to the particle emissions.

Highlights

In cold regions, pavement surface rutting is due to permanent deformation in the different layers of the structure as well as surface wear due to the use of studded tyres
The main purpose of this study was to determine the validity of the Swedish abrasion wear model for studded tyres, and to calibrate the model based on measurements performed during the last 14 years
For most objects both sub-models overestimate the calculated WR, both regarding maximum track wear (MTW) and average profile wear (APW). This indicates that a new correction is required to adjust to the observed abrasion wear. This result is likely affected by the fact that the abrasion wear model was developed using old tyre types, giving reason to believe that newer regulations and the developments following them are at least partly responsible for the overestimation, and affected by the lack of precise historical data

Summary

Introduction

Pavement surface rutting is due to permanent deformation in the different layers of the structure as well as surface wear due to the use of studded tyres. On the other hand, takes place during the winter months, forming particle pollution. Studded tyres are allowed (unrestricted or restricted use) in several countries, e.g. Finland, Norway, Canada, Russia and many of the states in the U.S.A. In Sweden, light traffic usage of studded tyres began in the 1960s (Zubeck et al 2004, Gustafsson et al 2006, Doré and Zubeck 2009), with the main purpose to improve vehicle manoeuvring and improve traffic safety during winter traffic conditions. The main drawbacks of studded tyres are linked to the surface abrasion caused by the studs repeatedly hitting the pavement surface. Negative environmental aspects include aerosol pollution in the form of non-exhaust PM10 (particulate matter with an aerodynamic diameter smaller than 10 μm, e.g. Thorpe and Harrison 2008) as well as noise pollution (Laurinavičius et al 2010)

Objectives

Results

Conclusion