Platform road and through road Passing loop

the through road has straight track, while platform road has low-speed turnouts @ either end.

a possible advantage of layout trains scheduled pass straight through station can uninterrupted; not have reduce speed pass through curve. layout used @ local stations many passenger trains not stop.

since there 1 passenger platform, not convenient cross 2 passenger trains if both stop.

an example scone railway station, northern end later rearranged resemble main , loop configuration. disadvantage of platform , through arrangement speed limits through turnouts @ each end.