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A1 between J1 and J2, Hertfordshire (Grid ref TL223050) C, Coursers Road, Hertfordshire (Grid ref TL201046) U, Hall Gardens, Hertfordshire (Grid ref TL209057) A1001 between A1(M) and A1000, Hertfordshire (Grid ref TL220062) U, Station Road, Hertfordshire (Grid ref TL240042) A1 between J2 and J3, Hertfordshire (Grid ref TL214065) U, Travellers Lane, Hertfordshire (Grid ref TL225069) A1000 between Dixons Hill Rd and A1001, Hertfordshire (Grid ref TL235064) A1001 between A1(M) jn2 and A1(M) jn3, Hertfordshire (Grid ref TL214070) C, Blue Bridge Road, Hertfordshire (Grid ref TL244033) A414 between A1081 and A1(M), Hertfordshire (Grid ref TL203067) A1081 between B556 W and M25 (midpoint), Hertfordshire (Grid ref TL190032) M25 between J23 and J22, Hertfordshire (Grid ref TL217011) A1081 between M25 Jct 22 and A414, Hertfordshire (Grid ref TL185040) U, Deerswood Avenue, Hertfordshire (Grid ref TL227074) A1000 between B158 and Dixons Hill Rd, Welham Green, Hertfordshire (Grid ref TL250055) A1001 between A1(M) and A1057, Hertfordshire (Grid ref TL212080) B556, Bell Lane, Hertfordshire (Grid ref TL181027) A1000 between A1001 and A414W, Hertfordshire (Grid ref TL230080) A1057 between Lyon Way, St Albans and Poplar Avenue, Hatfield, Hertfordshire (Grid ref TL200078)