Signs on Merseytravel Bus Stops

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Signs on Merseytravel Bus Stops
Hello everyone,
Just wondering has anyone else noticed the new signs that merseytravel seem to be putting on the outside of bus stop shelters ,and on the sign on the pole in some cases, stating the destination of all/some of the buses that call there in an abbreviated form, the ones I have seen up to now are as follows:
BOO-Bootle
AIG-Aigburth
WAD-Waddicar
MAG-Maghull
LIV-Liverpool

What is the point of these signs as they dont really help the passengers in my opinion, the timetable that is on the pole/in the shelter anyway tells you where the bus really goes anyway. Another thing that is at some stops there are buses that call have other destinations than what the sign says, for example there is one at old roan stating MAG presumably meaning Maghull when in reality the main bus routes are as follows
300-To southport
311-To skelmersdale
350-To Maghull
How they come to the conclusion that a sign saying MAG can be justified I dont know.

What are your opinions and have you seen any others with different 3 letter abbreviations