This is about as empty as it gets...
default=0 (empty)
default=1 (with default settings)
Code:
default=0
function insert_empty_track()
local SelTrack = reaper.GetSelectedTrack(0,0)
local tr_num = reaper.GetMediaTrackInfo_Value(SelTrack, 'IP_TRACKNUMBER')
reaper.InsertTrackAtIndex(tr_num, default)
end
insert_empty_track()
It's a good place to start if your learning LUA ...