- A4146 between Central Bedfordshire boundary and LA boundary, Central Bedfordshire (Grid ref TL007142)
- A4146 between LA boundary and B4506, Buckinghamshire (Grid ref SP994157)
- A4146 between B489 and B4508, Buckinghamshire (Grid ref SP990164)
- C, Nettleden Road, Hertfordshire (Grid ref TL013107)
- A4146 between A4147 and LA boundary, Hertfordshire (Grid ref TL033109)
- C70, Toms Hill Road, Hertfordshire (Grid ref SP967123)
- C, Nettleden Road, Hertfordshire (Grid ref TL031101)
- B4541, Whipsnade Road, Central Bedfordshire (Grid ref TL011190)
- U, Pickford Road, Hertfordshire (Grid ref TL059161)
- U, Cavendish Road, Hertfordshire (Grid ref TL058165)
- C, Wood End Lane, Hertfordshire (Grid ref TL066136)
- U, Bridgewater Road, Hertfordshire (Grid ref SP988085)
- A5 between A4012 and A505, Hertfordshire (Grid ref TL064163)
- A4251 between A41 / B4635 and Boswick Lane, Berkhamstead, Hertfordshire (Grid ref SP961100)
- A4251 between Boswick Lane and B4506, Hertfordshire (Grid ref SP970091)
- A4251 between B4506 and A416, Hertfordshire (Grid ref SP980084)
- A5 between Beech Rd, Dunstable and B4540, Central Bedfordshire (Grid ref TL038200)
- A5183 between A4012 and A505, Central Bedfordshire (Grid ref TL037200)
- U, Bowland Crescent, Central Bedfordshire (Grid ref TL013208)
- A4251 between A416 and Hall Park Gate, Hertfordshire (Grid ref SP997075)