Transport users require relevant, interactive and instantaneous information before and during their travels. For these needs, a Transport Multimodal Information System (TMIS) can propose a support tool adapted to the exponential growth of services and information available on large networks like the internet. In this context and even if many researchers have discussed for a long time its benefits, the mobile agent paradigm could be very efficient compared to the classical client server one if it is used through an optimization approach. In this paper, we propose an efficient model based on a multi-agent-system, using the mobile agent paradigm, in order to optimize the research and the composition of the transport business services.