F.ttp_begin({
 stn = "Silver Coast Central Siding",
 tt = "S12_S", -- timetable ID
 depint = "05;00", --departure slot interval
 depoff = "01;40", --departure slot offset
 doorside = "C",
 reverse = false,
 only_lines = {S12=true},
 force_tt_reset = false,
})