Artelia manages the construction of a metro line, designs a high-capacity tramway or bus system, defines the layout of a high-speed train line or motorway, forecasts traffic development and passenger or logistics flows, plans the development of a large port or large-capacity canal and the management of their interfaces with the environment, organises a multimodal hub, ensures the safety of a tunnel in a high-density urban area, develops signage, and renews information systems for both passengers and operators of transportation networks.