 The A38 dual @-@ carriageway runs from east to west across the north of the city . Within the city it is designated as ' The Parkway ' and represents the boundary between the urban parts of the city and the generally more recent suburban areas . Heading east , it connects Plymouth to the M5 motorway about 40 miles ( 65 km ) away near Exeter ; and heading west it connects Cornwall and Devon via the Tamar Bridge . Regular bus services are provided by Plymouth Citybus , Stagecoach South West and Target Travel . There are three Park and ride services located at <unk> , <unk> ( Plympton ) and George Junction ( Plymouth City Airport ) , which are operated by Stagecoach South West . 
