Cet article fournit une analyse du transport intermodal en Suisse. Il fait partie de la série d’expertises indépendantes effectuées pour l’Observatoire des Politiques et Stratégies de Transport en Europe. La principale composante du trafic intermodal en Suisse est le transit international (90%), où le trajet Nord-Sud domine nettement. Ce transit est réparti en parts relativement égales entre le transport routier, le combiné rail-route (dont l’autoroute roulante, qui ne représente que 4% du transit) et le ferroviaire traditionnel. Actuellement, le transport intermodal croît parallèlement au transport routier, mais il ne lui reprend pas de parts de marché. Les prévisions pour 2030 sont plus favorables au rail. This paper provides an analysis of intermodal transport in Switzerland. It is part of a series of independent expertises carried out for the Observatory of Transport Policies and Strategies in Europe. Intermodal transport in Switzerland is composed, as far as 90% of it is concerned, of international traffic in transit and especially of transit along the North- South axis. Intermodal transport in transit is divided rather equally amongst road transport, rail-road transport (of which the far more spoken about than really significant ‘piggy back’, with only 4% of transit) and traditional rail traffic. So far, intermodal transport has only experienced a growth in parallel to that of road transport, without taking a larger share of the market. Forecasts for 2030 envisage a stronger growth on rail than on road.