3989001 Signalling equipment and installations, mechanical, railway 3989002 Signalling equipment and installations, electrical, railway 3989003 Signalling equipment and installations, electromechanical, railway 3989004 Signalling equipment and installations, electro-pneumatic, railway 3989005 Signalling equipment and installations, electronic, railway 3989006 Signalling equipment and installations, automatic interlocking, railway 3989008 Signal masts, signal gantries, railway 3989009 Railway signal boxes 3989012 Signal lamps, electric, railway 3989014 Railway signal flags 3989016 Barriers, level crossing, non-electric 3989017 Barriers, level crossing, electric 3989019 Control and protection systems for level crossing barriers 3989024 Controls, mechanical, for points and switches, railway 3989025 Controls, electrical, for points and switches, railway 3989026 Controls, electro-pneumatic, for points and switches, railway 3989030 Switch point control boxes, railway 3989031 Heating equipment, rail track points 3989033 Control and warning equipment, automatic, railway 3989035 Traffic control systems, railway 3989038 Train describers (destination indicators) 3989040 Signalling and control systems, centralised, for underground railway networks 3989042 Control systems, electric, for mountain railways and ski lifts 3989045 Bells and compressed air horns, railway 3989046 Passenger alarm equipment, railway 3989050 Safety and surveillance control equipment for drivers, railway 3989052 Barrier door systems, railway platform 3989054 Test equipment, electric signalling, railway
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