These consist of all transport passenger and freight transport not covered within the definitions of road, rail, air, waterborne or intermodal transport. These innovative transport modes require special vehicles or infrastructure. This includes all unconventional and innovative land-based modes, as well as traditional land or sea-pipelines. Concepts that fall under innovative modes include unconventional underground transport, e.g. utilising evacuated tubes, pipelines, fast-moving walkways and various Personal Rapid Transit and cable-driven support systems.