- C, Nettleden Road, Hertfordshire (Grid ref TL013107)
- C, Nettleden Road, Hertfordshire (Grid ref TL031101)
- A4146 between A4147 and LA boundary, Hertfordshire (Grid ref TL033109)
- U, Bridgewater Road, Hertfordshire (Grid ref SP988085)
- A4251 between A416 and Hall Park Gate, Hertfordshire (Grid ref SP997075)
- A4146 between Central Bedfordshire boundary and LA boundary, Central Bedfordshire (Grid ref TL007142)
- A4251 between Hall Park Gate, Berkhamstead and A41, Hertfordshire (Grid ref TL008068)
- A4251 between B4506 and A416, Hertfordshire (Grid ref SP980084)
- U, Honeycross Road, Hertfordshire (Grid ref TL032068)
- A4146 between Gadebridge Lane and A4147, Hertfordshire (Grid ref TL050084)
- A4146 between Warners End Road and A4147, Hertfordshire (Grid ref TL050084)
- A416 between A416 split Kingshll Way Rndbt and A4251, Hertfordshire (Grid ref SP985072)
- A41 between A4251 W and A416, Hertfordshire (Grid ref TL003063)
- A4251 between Boswick Lane and B4506, Hertfordshire (Grid ref SP970091)
- U, Warners End Road, Hertfordshire (Grid ref TL045075)
- A416 between A416 Kingshill Way and A41, Hertfordshire (Grid ref SP988067)
- A41 between A414 and A4251W, Hertfordshire (Grid ref TL030061)
- A41 between A416 and A416, Hertfordshire (Grid ref SP986066)
- C70, Toms Hill Road, Hertfordshire (Grid ref SP967123)
- A416 between A416 Chesham Road and A416 Kingshill Way, Hertfordshire (Grid ref SP985065)