15. Before providing any illumination or illuminated traffic sign on or in connection with the specified work or in the vicinity of the Canal, the undertaker must consult with the authority and comply with the authority’s reasonable requirements in regard to such lighting with a view to ensuring that—
(a)appropriate navigation lighting is placed on the specified works and on any protective works; and
(b)any illuminations will not be directed upstream or downstream into the path of oncoming vessels on the Canal to ensure that such illumination or illuminated signs cannot be confused with any lights or lighting used for controlling, directing or securing the safety of vessels on the Canal.