En outre, nous pourrions probablement améliorer la qualité de l’air de 25 à 50% - du moins dans bien des domaines - si nous nous orientions davantage vers un transport combiné, à savoir, la combinaison du rail, de la route et des voies navigables.
If, moreover, we were to achieve – as is probable – an improvement of between 25% and 50% in our air quality – at least in quite a few areas – we should be setting our sights more firmly upon combined transport, that is to say on a combination of rail, road and water.