Lothian Buses Trunked System

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What all you need to know is that all LRT traffic comes from the central hub in Annandale street no matter whare they are in Edinburgh and surrounding areas like gorebridge and penicuik
The 3 depots at Annandale st longstone and marine garages are all linked to Annandale st.
But each depot has a smaller radio system for local traffic to the areas that they are in.