Paragraph 4
The northbound slip roads are—
(a)
at junction 16 of the M1 the A slip road commencing at the zone sign and ending where it merges with the M1 northbound;
(b)
at the Watford Gap Services of the M1 the C slip road commencing where it diverges from the M1 northbound and ending at the zone sign;
(c)
at the Watford Gap Services of the M1 the D slip road commencing at the zone sign and ending where it merges with the M1 northbound;
(d)
at junction 18 of the M1 the I slip road commencing where it diverges from the M1 northbound and ending at the zone sign; and
(e)
at junction 18 of the M1 the J slip road commencing at the zone sign and ending where it merges with the M1 northbound.