Silent urban driving

The Work Package will be responsible for organizing and conducting the noise measurements done in COMPETT as well as analysing how electric powered vehicles will affect the noise environment.

It has often been claimed that electric vehicles are silent. But measurement based on knowledge is sporadic.

Only limited noise measurement results are available and measurements have rarely been performed under real urban driving conditions with direct comparison to noise levels from similar vehicles with combustion engines. The effect on noise levels of replacing combusting engine vehicles with electric vehicles driving on various types of pavement used in urban areas (cobble stones, concrete settings, noise reducing pavements etc.) is unknown.

Realistic knowledge based scenarios for the effect on urban noise of using different percentages of electric vehicles is not available. The COMPETT project takes on this task with the existing knowledge as a starting point.

Electric power units in vehicles are often considered almost completely silent and this can be very interesting, as by far the largest source of noise in urban areas in Europe is the road transport system. This can be seen in the noise mapping performed according to the EU noise directive. There is no unique or easy solution to the noise problems caused by road transport in Europe. The solution will consist of a combination of many measures and one of these will be the introduction of electrified vehicles.

Noise abatement strategies including different tools will have to be implemented over a longer period. Therefore the noise consequences of introducing electric vehicles will be analysed in COMPETT in order to investigate how electric vehicles can contribute to a better noise environment in the urban areas in Europe, and how this advantage can be applied to introduce electrified cars to a greater extent. The focus will be on passenger cars.