- U, Porters Hill, Hertfordshire (Grid ref TL143155)
- U, Northfield Road, Hertfordshire (Grid ref TL142157)
- U, Pickford Hill, Hertfordshire (Grid ref TL147156)
- B652, Station Road, Hertfordshire (Grid ref TL143147)
- C, Hollybush Lane, Hertfordshire (Grid ref TL131151)
- C, Clarence Road, Hertfordshire (Grid ref TL130150)
- A1081 between B653 and The Common, Hertfordshire (Grid ref TL129150)
- A1081 between B487 and B653, Hertfordshire (Grid ref TL136136)
- U, Grove Road, Hertfordshire (Grid ref TL144133)
- C, Limbrick Road, Hertfordshire (Grid ref TL141125)
- C, Roundwood Lane, Hertfordshire (Grid ref TL113149)
- A1081 between Beesonend Lane and B487, Hertfordshire (Grid ref TL137125)
- U, West Common Way, Hertfordshire (Grid ref TL134124)
- U, Beesonend Lane, Hertfordshire (Grid ref TL135118)
- A1081 between Beesonend Lane, Harpenden and Sandridgebury Lane, St Albans, Hertfordshire (Grid ref TL143112)
- B653, Lower Harpenden Road, Central Bedfordshire (Grid ref TL115190)
- A1081 between The Common, Harpenden and Hertfordshire boundary, Hertfordshire (Grid ref TL100169)
- A5183 between B487 and A5, Hertfordshire (Grid ref TL100137)
- A5183 between B487 and B487, Hertfordshire (Grid ref TL110119)
- A5 between M1 (midpoint) and A5183, Hertfordshire (Grid ref TL092146)