*Indian Railways Technical Terms Abbreviations Traffic, Safety & Signalling

 Indian Railways Technical Terms Abbreviations Traffic, Safety & Signalling

 

S.No.	Abbreviation	Full Form
1	ABS	Automatic Block Signalling
2	ACD	Anti-Collision Device
3	AE	Automatic Emergency Brake
4	AFTC	Audio Frequency Track Circuit
5	ATC	Automatic Train Control
6	ATP	Automatic Train Protection
7	ATS	Automatic Train Stop
8	ATVM	Automatic Ticket Vending Machine
9	BPC	Brake Power Certificate
10	BS	Braking in Series
11	BSL	Block Section Limit
12	BSP	Braking in Series-Parallel
13	CDO	Coaching Depot
14	CLS	Colour Light Signalling
15	COCR	Confirmatory Oscillograph Car Run
16	COFC	Container on Flat Car
17	CTC	Centralized Traffic Control
18	DAC	Digital Axle Counter
19	DFC	Dedicated Freight Corridor
20	EI	Electronic Interlocking
21	FM	Fouling Mark
22	IBS	Intermediate Block Signalling
23	IPS	Integrated Power Supply
24	LC	Level Crossing
25	MACLS	Multiple Aspect Colour Light Signalling
26	MSDAC	Multi Section Digital Axle Counter
27	NI	Non-Interlocked
28	NX	Entrance-Exit Interlocking
29	OFC	Optical Fibre Cable
30	PI	Panel Interlocking
31	RRI	Route Relay Interlocking
32	RPC	Resistance Power Control
33	S&T	Signal and Telecommunication
34	SPAD	Signal Passed At Danger
35	SSDAC	Solid State Digital Axle Counter
36	SSI	Solid State Interlocking
37	STR	Station Technical Register
38	STRI	Stencil Type Route Indicator
39	SW	Semaphore Signal (Single Wire Type)
40	SWR	Station Working Rules / Short Welded Rail (Context Dependent)
41	TALQ	Two Aspect Lower Quadrant Signal
42	TAWD	Train Actuated Warning Device
43	TC	Track Circuit
44	TMS	Train Management System
45	TPWS	Train Protection and Warning System
46	TRT	Traffic Recovery Time
47	UFSBI	Universal Fail Safe Block Interface
48	UWC	Unmanned Level Crossing (Historical)
49	VDU	Visual Display Unit
50	VHF	Very High Frequency Radio Communication