There are two lines to and from Salerno, the CSTP (the urban-type local public transport company) and SITA (company belonging to the Ferrovie dello Stato Group and structured Directions regional)

You can see the CSTP website by clicking:
here for the lines
here for long distance lines
here for the lines from other towns
here for the lines to / from universities

You can see the SITA website by clicking:
here for the lines and schedules