- U, North Common Road, Hertfordshire (Grid ref TL101118)
- B487, Hertfordshire (Grid ref TL102115)
- A5183 between B487 and B487, Hertfordshire (Grid ref TL110119)
- M1 between J8 and J9, Hertfordshire (Grid ref TL097105)
- A5183 between B487 and A5, Hertfordshire (Grid ref TL100137)
- A5183 between A4147 and B487, Hertfordshire (Grid ref TL118101)
- A5 between M1 (midpoint) and A5183, Hertfordshire (Grid ref TL092146)
- M1 between M1 (midpoint) and A5183, Hertfordshire (Grid ref TL092146)
- M1 between M1 (midpoint) and A5183, Hertfordshire (Grid ref TL091146)
- A5 between M1 (midpoint) and A5183, Hertfordshire (Grid ref TL091146)
- C, Roundwood Lane, Hertfordshire (Grid ref TL113149)
- U, West Common Way, Hertfordshire (Grid ref TL134124)
- U, Beesonend Lane, Hertfordshire (Grid ref TL135118)
- A5 between B4540 and M1 jn9, Hertfordshire (Grid ref TL086150)
- M1 between J9 and Hertfordshire boundary, Hertfordshire (Grid ref TL091153)
- A1081 between Beesonend Lane and B487, Hertfordshire (Grid ref TL137125)
- C, Wood End Lane, Hertfordshire (Grid ref TL066136)
- A1081 between B487 and B653, Hertfordshire (Grid ref TL136136)
- C, Limbrick Road, Hertfordshire (Grid ref TL141125)
- A1081 between Beesonend Lane, Harpenden and Sandridgebury Lane, St Albans, Hertfordshire (Grid ref TL143112)