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U, St Vincent Drive, Hertfordshire (Grid ref TL165061) A1081 between A414 and A5183, Hertfordshire (Grid ref TL160061) U, Sandfield Road, Hertfordshire (Grid ref TL162073) A1057 between A1081/A4147 and Lyon Way, Hertfordshire (Grid ref TL160072) U, Nightingale Lane, Hertfordshire (Grid ref TL174050) U, Beaumont Avenue, Hertfordshire (Grid ref TL169074) C174, Colney Heath Lane, Hertfordshire (Grid ref TL180069) A414 between M10 and A1081, Hertfordshire (Grid ref TL150048) A1081 between A5183 and A4147, Hertfordshire (Grid ref TL148074) U, High Street, Hertfordshire (Grid ref TL177043) A1081 between A4147 and B651, Hertfordshire (Grid ref TL150077) C, Marshalswick Lane, Hertfordshire (Grid ref TL168082) A5183 between M10 and A1081, Hertfordshire (Grid ref TL142056) U, Battlefield Road, Hertfordshire (Grid ref TL157082) A5183 between Park Street Lane and M10, Hertfordshire (Grid ref TL146045) M10 between M1(7) and J1, Hertfordshire (Grid ref TL142051) A414 between M1 Junction 7 and Roundabout A414, A5183 and A405, Hertfordshire (Grid ref TL142051) U, Shenley Lane, Hertfordshire (Grid ref TL173037) A5183 between A1081 and A4147, Hertfordshire (Grid ref TL143075) A1081 between Sandridgebury Lane and B651 Stonecross, Hertfordshire (Grid ref TL150084)