- A1081 between M25 Jct 22 and A414, Hertfordshire (Grid ref TL185040)
- U, High Street, Hertfordshire (Grid ref TL177043)
- A1081 between B556 W and M25 (midpoint), Hertfordshire (Grid ref TL190032)
- U, Shenley Lane, Hertfordshire (Grid ref TL173037)
- B556, Bell Lane, Hertfordshire (Grid ref TL181027)
- U, Nightingale Lane, Hertfordshire (Grid ref TL174050)
- C, Coursers Road, Hertfordshire (Grid ref TL201046)
- B556, Harper Lane, Hertfordshire (Grid ref TL174023)
- M25 between J21A and J22, Hertfordshire (Grid ref TL162027)
- U, St Vincent Drive, Hertfordshire (Grid ref TL165061)
- U, Hall Gardens, Hertfordshire (Grid ref TL209057)
- C174, Colney Heath Lane, Hertfordshire (Grid ref TL180069)
- A1081 between A414 and A5183, Hertfordshire (Grid ref TL160061)
- A414 between A1081 and A1(M), Hertfordshire (Grid ref TL203067)
- A414 between M10 and A1081, Hertfordshire (Grid ref TL150048)
- U, Beaumont Avenue, Hertfordshire (Grid ref TL169074)
- A5183 between Park Street Lane and M10, Hertfordshire (Grid ref TL146045)
- A1 between J1 and J2, Hertfordshire (Grid ref TL223050)
- A1 between J2 and J3, Hertfordshire (Grid ref TL214065)
- U, Sandfield Road, Hertfordshire (Grid ref TL162073)