Multiple unit classes are treated differently , because an attempt has been made to give units working within the same region or sector unique identifiers -LRB- for more information see British Rail Regional Multiple Unit Numbering -RRB- .
For further information on individual classes of locomotive or multiple unit , see these pages :
For further information on individual classes of locomotive or multiple unit , see these pages :
Rewrite this with simpler wording: Multiple unit classes are treated differently , because an attempt has been made to give units working within the same region or sector unique identifiers -LRB- for more information see British Rail Regional Multiple Unit Numbering -RRB- . Output: