Sapt Kranti Express: Ruling the tracks with EMD Power - Keshav Singh

New Coach Designations (2007)
■Sleeper coaches' designations are unchanged: S-1, S-2, etc.
■1st AC coaches' designations are unchanged: H-1, H-2, etc.
■AC 2-tier coaches' designations are unchanged: A-1, A-2, etc.
■First class coaches' designations unchanged:...
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FC or F.
■AC Chair Car coaches' designations unchanged: C-1, C-2, etc.
■B-1, B-2, etc. : AC 3-tier (formerly AS-1, etc.)
■D-1, etc. : Second-class sitting (formerly S-1, or SC-1, etc.)
■E-1, etc. : Executive class (formerly EC-1, etc.).
■J-1, etc. : Garib Rath chair car (formerly GC-1, etc.)
■Garib Rath AC 3-tier coaches' designation is unchanged (G-1, etc.).
■Composite coaches combine letters for the constituent classes, e.g., HA for 1st AC cum 2nd AC, AB for AC 2-tier cum AC 3-tier
■L-1, L-2, etc., are sometimes used for high-capacity 3AC coaches. This is intended to be an internal code for ticketing and passenger information, but is sometimes used for seat charts.
■M-1, M-2, etc., are sometimes used for high-capacity chair-car coaches. This is intended to be an internal code for ticketing and passenger information, but is sometimes used for seat charts.
■N-1, N-2, etc., are sometimes used for high-capacity (81 berths) sleeper coaches. This is intended to be an internal code for ticketing and passenger information, but is sometimes used for seat charts.
source:IRFCA