A light-based (only) repeating signal, consists of the pole (painted in white or grey) and the head with three cells inside (three lights). The cells are placed in the following order: orange, green, and white. The white light is always on, while the green or the orange depends on the signal reflected on the main semaphore.

• Repeating semaphore is named according to the following rules:
• first are 'Sp' letters indicating the repeating signal ('Sp' means repeating signal - 'sygnal powtarzajacy' in Polish)
• then is the Roman number determining how many repeating semaphores are placed before main semaphore. If there's 'III" that means three repeating semaphores are set before the main semaphore and this is the third (then will be 'II' and finally 'I', and then - main semaphore). No more than three repeaters are allowed for each separate main semaphore.
• the name of the repeated semaphore is at the end of the whole set
• besides, the additional plate with Roman number indicating how many 'repeaters' are before the main semaphore is put on the pole below the name.

'Repeaters' are used when the main semaphore cannot be noticed from the necessary distance by the loco-engineer (for example when the main semaphore is after curve or when platform roof makes the main semaphore impossible to notice).

SIGNALS GIVEN BY REPEATING SEMAPHORES
-	Sp1 'MAIN SEMAPHORE: STOP' the main semaphore reflects S1 - stop
	Sp2 'MAIN SEMAPHORE: HIGHBALL' the main signal reflects either of the following signals: S2, S3, S4, S5
	Sp3 'MAIN SEMAPHORE: 100 km/h SPEED LIMIT' the main signal reflects either of the following signals: S6, S7, S8, S9
	Sp4 'MAIN SEMAPHORE: 40 OR 60 km/h SPEED LIMIT' the main signal reflects either of the following signals: S10, S10a, S11, S11a, S12, S12a, S13, S13a
	[...] /valid until cancellation/ 'MAIN SEMAPHORE: SPEED LIMIT' the main semaphore reflects limited speed