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Alberta RCMP, use callsigns similar to those in most other provinces (except BC). The format is number-letter-three digit number (although this last number grouping may be one to three digits on older units). The first number indicates the sub-division; there are at least six in Alberta. The letter is from the list below, and the number is a unique number within each sub-division (though sequential numbers are not assigned in detachments, i.e. one detachment may have cars 11, 43, and 79).
The letter corresponds to the following list. Note that there are some non-RCMP units listed.
A - Rural (county/district/detachment)
B - Town (municipality/city)
C - Highway Patrol
D - Plainclothes/General Investigations
E - Operational Support (Identification, Information Technology, etc)
F - Administrative Support (Commissioned Officers, etc)
G - Traffic Services Unit (also/formerly Freeway Patrol)
K - Police Dog Service (K9)
M - Motorcycle Unit (typically Alberta Sheriffs)
T - Alberta Sheriffs Traffic Enforcement
Z - Command Post Vehicle