The main signal can have any of the following aspects: If a main signal doesn't protect any switches or the speed restriction on a diverging route is the same as straight route, the signal doesn't need to show the Proceed 35 aspect and therefore the yellow bottom light may be absent.The two lamp version of the old system has the lights reversed, i.e. red at the top and green at the bottom.A distant signal can have any of the following aspects: Note: Although the green light of the old system distant signal used in Helsinki area is named Expect Proceed aspect, the next main signal may in fact be showing the Proceed 35 aspect.They can have any of the following aspects: Repeaters are sometimes used to repeat the aspect of the main signal in the Helsinki area in places where the main signal is not clearly visible.Media related to Railway signals in Finland at Wikimedia Commons
A dwarf signal showing the
Stop
aspect
A bridge signal showing the
Proceed
aspect
A stop signal is shown at
Rastila
as a train enters the station.