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M1 between J7 and J8, Hertfordshire (Grid ref TL097070) A414 between J7 and J8, Hertfordshire (Grid ref TL095071) M1 between A414 and M1 (8), Hertfordshire (Grid ref TL091076) A414 between A414 and M1 (8), Hertfordshire (Grid ref TL091076) A4147 between Greenacres, Hemel Hempstead and King Harry Lane roundabout, Hertfordshire (Grid ref TL100060) A414 between A4147 and M1, Hertfordshire (Grid ref TL088075) C, Buncefield Lane, Hertfordshire (Grid ref TL086076) A4147 between A414 and Greenacres, Hertfordshire (Grid ref TL081067) U, Stroma Close, Hertfordshire (Grid ref TL081060) A4147 between B487 and A414, Hertfordshire (Grid ref TL078080) C, Peascroft Road, Hertfordshire (Grid ref TL074061) C127, Bennetts End Road, Hertfordshire (Grid ref TL069066) M1 between J6A and J7, Hertfordshire (Grid ref TL112046) U, Hobletts Road, Hertfordshire (Grid ref TL069078) U, Highwoodhall Lane, Hertfordshire (Grid ref TL074047) C, Tom's Lane, Hertfordshire (Grid ref TL096035) U, Turners Hill, Hertfordshire (Grid ref TL062070) M1 between J8 and J9, Hertfordshire (Grid ref TL097105) A4147 between Aycliffe Drive and B487, Hertfordshire (Grid ref TL068090) A4147 between King Harry Lane roundabout and A5183, Hertfordshire (Grid ref TL132070)