As part of the transport planning system the Regional Assembly is under statutory requirement to produce a Regional Transport Strategy (RTS) to provide long term planning for transport in the region. This involves region wide transport schemes such as those carried out by the Highways Agency and Network Rail. Within the region the local transport authorities carry out transport planning through the use of a Local Transport Plan (LTP) which outlines their strategies, policies and implementation programme. The most recent LTP is that for the period 2006–11. In the South East region the following transport authorities have published their LTP online: