It is Government policy that transport planning should be fully integrated with land use planning at the regional and local levels. The preparation of a Regional Transport Strategy (RTS) as an integral and clearly identifiable part of Regional Planning Guidance (RPG) is of key importance to achieving this integration. The RTS will identify regional priorities for transport investment and management across all modes, including trunk roads and local highway authority roads of regional or sub-regional significance. Regional Planning Bodies (RPBs) may use multi-modal studies to help formulate their RTSs.