CNR Locomotive Classes

Steam Locomotive Classes

Class			Numbers			Type	Description
A-1	–	A-15	100	–	172	4-4-0	Americans, driver diameter under 63"
B-1	–	B-26	212	–	399	4-4-0	Americans, driver diameter over 63"
C-1	–	C-8	400	–	428	2-6-0	Moguls, driver diameter under 52"
D-1	–	D-11	470	–	504	2-6-0	Moguls, driver diameter 52" to 58"
E-1	–	E-12	530	–	929	2-6-0	Moguls, driver diameter over 58"
F-1	–	F-4	1000	–	1015	4-6-0	Ten Wheelers, driver diameter under 52"
F-3			15	–	18	4-6-0	Ten Wheelers (narrow gauge), driver diameter under 52"
G-1	–	G-21	1016	–	1178	4-6-0	Ten Wheelers, driver diameter 52" to 58"
H-1	–	H-11	1200	–	1454	4-6-0	Ten Wheelers, driver diameter 58" to 63"
I-1	–	I-8	1500	–	1628	4-6-0	Ten Wheelers, driver diameter over 63"
J-1	–	J-7	5000	–	5304	4-6-2	Pacifics, driver diameter under 70"
J-8			590	–	599	4-6-2	Pacifics (narrow gauge), driver diameter under 70"
K-1	–	K-4	5500	–	5634	4-6-2	Pacifics, driver diameter over 70"
K-5			5700	–	5704	4-6-4	Hudsons
L-5	–	L-6	1800	–	1804	2-8-0	Consolidations, driver diameter under 52"
L-7			280			2-8-0	Consolidations (narrow gauge), driver diameter under 52"
M-4	–	M-5	1805	–	2200	2-8-0	Consolidations, driver diameter 52" to 58"
N-1	–	N-5	2334	–	2819	2-8-0	Consolidations, driver diameter over 58"
O-2	–	O-20	7000	–	7543	0-6-0	6-wheel Switchers
P-1	–	P-5	8000	–	8448	0-8-0	8-wheel Switchers
Q-1	–	Q-9	7000	–	8498	B-B	Diesel Switchers
R-1			3000			2-8-2	Mikados, driver diameter under 52"
R-2			300	–	329	2-8-2	Mikados (narrow gauge), driver diameter under 52"
S-1	–	S-4	3198	–	4097	2-8-2	Mikados, driver diameter over 52"
T-1	–	T-4	4000	–	4732	2-10-2	Santa Fe's
U-1	–	U-1	6000	–	6079	4-8-2	Mountains
U-2	–	U-4	6100	–	6410	4-8-4	Northerns
V-1			9000	–	9142	B-B	EMD/GMD Cab Units
W-1			9400	–	9456	B-B	MLW Cab Units
X-4			10	–	27	4-4-0	Suburbans, American
X-5			28	–	35	4-6-0	Suburbans, Ten Wheeler
X-6	–	X-7	36	–	40	0-4-0T	Suburbans
X-8	–	X-9	41	–	44	0-4-2T	Suburbans
X-10			45	–	50	4-6-4T	Suburbans, Hudson
Y-1	–	Y-7	7550	–	7874	B-B	Diesel Road Switchers
Z-1	–	Z-6	100	–	230	B-B	Electrics

Diesel Locomotive Classes

pre-1954

C-1			Canadian Locomotive Company cab units
Q-1	–	Q-6	switchers
V-1			General Motors Diesel Division & General Motors Corp. Electro-Motive Division cab units
W-1			Montreal Locomotive Works cab units
Y-1	–	Y-7	road switchers
Z-1	–	Z-6	electrics

post-1954

1st letter – builder
A	auxiliary power unit	G	General Motors Diesel Division General Motors Corp., Electro-Motive Division
C	Canadian Locomotive Company	M	Montreal Locomotive Works Bombardier Inc.
E	General Electric Company Canadian Car & Foundry electric MU cars	L	miscellaneous
2nd letter – type
C	commuter	R	road switcher
F	road freight	S	switcher
H	hump unit	T	MU trailer car
L	local	Y	yard
P	passenger MU motor car
3rd letter – optional
A	"A" unit	G	steam generator equipped
B	"B" unit	L	hump unit: leading unit
E	electric generator equipped	T	hump unit: trailing unit
–
numbers – horsepower
##	hp, rounded to nearest hundred seating capacity for electric MU cars	4##	4-axle unit; hp, rounded to nearest hundred
		6##	6-axle unit; hp, rounded to nearest hundred
letter – sub-class