A, B, C are variants of the original bus route, also known as
short working trips, distance compared to the original route is not
taken into consideration. It may start and ePnd at any point of the
original route
E is the express(Fast Forward for SBST) version of the route.
M is for Midpoint turn of the original route, it is not
modified...
This defers from Hong Kong where alphabets taken on a different
meaning,
A,B,C,D of a route means they start from a Terminal, end at
different places
Eg. Citybus
5: Felix Villa > Causeway Bay (Whitfield Rd)
5B: Kennedy Town > Causeway Bay(HK Stadium)
5C: West Point (Shek Tong Shui) > Wan Chai [morning peak]
M means terminating at a MTR station esp for use by KMB
routes
CTB 12M, 40M for Hong Kong island
NXX are night routes which are a variant of the days routes and can
combine 2 or more routes eg N122
P means special despatch during peak hours, 8P is an exception
though which runs throughout the day
5P Kennedy Town > Wan Chai Ferry Pier
R means differently for different routes,
Special peak despatch from City One Shatin, eg 61R,62R, 88R
while 101R, 102R, goes to Happy Valley during Horse Racing
days
117R is from Hong Kong Stadium to Mong Kok on specified days
171R is a special service from Ocean Park on specified days,
698R is another special route on Sundays/PHs
For KMB, R routes operate on Sundays/PH and it goes to parks, 96R
is one
S means special despatch during peak hours
5S: Sai Ying Pun(Centre Street) > Wan Chai(QE Stadium)
X means express version of the route
5X: Kennedy Town > Causeway Bay(Whitfield Rd)