- A1000 between A1000 Mundells and A1000 Hertford Rd, Hertfordshire (Grid ref TL241150)
- A1000 between Bessemer Rd and A1000 split, Hertfordshire (Grid ref TL240154)
- U, Fallowfield, Hertfordshire (Grid ref TL247143)
- A1000 between A1000 split and A1M/B197 S, Hertfordshire (Grid ref TL233157)
- A1 between A1000 Hertford Road and A1000/B197, Hertfordshire (Grid ref TL235160)
- A1000 between A1000 split and A1M Jct 6/B656/B197, Hertfordshire (Grid ref TL234160)
- U, Mornington, Hertfordshire (Grid ref TL252157)
- A1000 between Ring Rd Jct S and Ring Rd Jct N, Hertfordshire (Grid ref TL248136)
- U, Rowans, Hertfordshire (Grid ref TL253140)
- B656, Church Street, Hertfordshire (Grid ref TL233164)
- A1000 between B195W and Ring Rd Jct S, Hertfordshire (Grid ref TL244133)
- A1000 between inner ring road and inner ring road, Hertfordshire (Grid ref TL248135)
- B195, Bridge Road, Hertfordshire (Grid ref TL239131)
- U, Howardsgate, Hertfordshire (Grid ref TL236130)
- A1 between J5 and J6, Hertfordshire (Grid ref TL223140)
- U, Daniells, Hertfordshire (Grid ref TL252131)
- B195, Welwyn Garden City, Hertfordshire (Grid ref TL252131)
- U, Ridgeway, Hertfordshire (Grid ref TL254127)
- U, Applecroft Road, Hertfordshire (Grid ref TL229125)
- A1000 between A6129 and B195 W, Hertfordshire (Grid ref TL240121)