- M1 between J8 and J9, Hertfordshire (Grid ref TL097105)
- B487, Hertfordshire (Grid ref TL102115)
- U, North Common Road, Hertfordshire (Grid ref TL101118)
- A5183 between B487 and B487, Hertfordshire (Grid ref TL110119)
- A5183 between A4147 and B487, Hertfordshire (Grid ref TL118101)
- M1 between A414 and M1 (8), Hertfordshire (Grid ref TL091076)
- A414 between A414 and M1 (8), Hertfordshire (Grid ref TL091076)
- C, Buncefield Lane, Hertfordshire (Grid ref TL086076)
- A414 between A4147 and M1, Hertfordshire (Grid ref TL088075)
- A4147 between B487 and A414, Hertfordshire (Grid ref TL078080)
- A5183 between B487 and A5, Hertfordshire (Grid ref TL100137)
- A4147 between Aycliffe Drive and B487, Hertfordshire (Grid ref TL068090)
- A414 between J7 and J8, Hertfordshire (Grid ref TL095071)
- M1 between J7 and J8, Hertfordshire (Grid ref TL097070)
- U, Hobletts Road, Hertfordshire (Grid ref TL069078)
- U, Fletcher Way, Hertfordshire (Grid ref TL063084)
- A4147 between A414 and Greenacres, Hertfordshire (Grid ref TL081067)
- A4147 between A4146 and Aycliffe Drive, Hemel Hempstead, Hertfordshire (Grid ref TL060088)
- U, Beesonend Lane, Hertfordshire (Grid ref TL135118)
- A5 between M1 (midpoint) and A5183, Hertfordshire (Grid ref TL092146)