- M1 between J6A and J7, Hertfordshire (Grid ref TL112046)
- C, Tom's Lane, Hertfordshire (Grid ref TL096035)
- A4147 between Greenacres, Hemel Hempstead and King Harry Lane roundabout, Hertfordshire (Grid ref TL100060)
- M25 between J21A and J21, Hertfordshire (Grid ref TL125031)
- M25 between J20 and J21, Hertfordshire (Grid ref TL100029)
- M1 between J6 and J6A, Hertfordshire (Grid ref TL118024)
- A405 between M25 and Tippendell Lane, St Albans, Hertfordshire (Grid ref TL136039)
- A405 between M1 and M25, Hertfordshire (Grid ref TL119022)
- A405 between Tippendell Lane and M10, Hertfordshire (Grid ref TL140046)
- M1 between J7 and J8, Hertfordshire (Grid ref TL097070)
- A414 between J7 and J8, Hertfordshire (Grid ref TL095071)
- M10 between M1(7) and J1, Hertfordshire (Grid ref TL142051)
- A414 between M1 Junction 7 and Roundabout A414, A5183 and A405, Hertfordshire (Grid ref TL142051)
- U, King Harry Lane, Hertfordshire (Grid ref TL136064)
- A4147 between King Harry Lane roundabout and A5183, Hertfordshire (Grid ref TL132070)
- A5183 between M10 and A1081, Hertfordshire (Grid ref TL142056)
- U, Stroma Close, Hertfordshire (Grid ref TL081060)
- A5183 between Park Street Lane and M10, Hertfordshire (Grid ref TL146045)
- M1 between A414 and M1 (8), Hertfordshire (Grid ref TL091076)
- A414 between A414 and M1 (8), Hertfordshire (Grid ref TL091076)