Transponder units installed on tracks (Bright Yellow) as part of the CBTC signalling system
Transponder units installed on tracks (Bright Yellow) as part of the CBTC signalling system
CBTC Signalling system – Transponder units
Transponder units installed on tracks (Bright Yellow) as part of the CBTC signalling system
Transponder units installed on tracks (Bright Yellow) as part of the CBTC signalling system