sentences:  The 16 kilometer Metro Manila Skyway or simply Skyway is an elevated expressway that connects Manila with Alabang, Muntinlupa City which is located above the SLEX.The 42 kilometer Southern Tagalog Arterial Road or STAR Tollway which runs south from Santo Tomas, Batangas to the City of Batangas.It is also connected to the South Luzon Expressway via an exit in Santo Tomas, Batangas since 2010 which makes it the continuation of the connection of Manila to the provinces of the Southern part of Luzon as it also a part or extension of the Radial Road 3 network (see Radial Road 3).