Controlled pass-by measurements of electric vehicles within the FOREVER project

The introduction of electric and hybrid vehicles in the traffic is changing the soundscape of the traffic noise. Forever is a two-year project aimed at analyzing the potential future noise impact on national roads, while other projects focus mainly on urban environment. The project started in the beginning of 2013 and the measurements campaign has been performed in summer 2013. In this paper results connected to work package 3, which is led by AIT, are be presented. WP3 focuses on the noise produced by the tyre-road interaction. For electric and hybrid vehicles the noise from the engine is completely or partly missing, thus bringing in foreground the tyre-road noise. Specific tyres have been chosen, where the rolling resistance is low, the wet grip is good and the noise emitted is low. These tyres have all the features that are important for electric and hybrid vehicles and are a good representation of the future tyre market for these vehicles. Controlled pass-by measurements (CPB) have been performed with these tyres on a Renault Fluence ZE on a typical road surface and the results discussed.