The core activity of Transportplan Sion SA is to provide engineering services in the field of mobility and transport, particularly in the following areas: planning and studies in the field of public transport and soft mobility; traffic studies and modeling; planning and design of transport infrastructure, including parking facilities; consulting services for public and private clients on mobility and transport issues; and engineering services in the field of construction and infrastructure planning. The company thus offers a wide range of services aimed at planning, designing and optimizing mobility and transport in cities and regions.