Paragraph 63 Navigational lights, buoys, etc.I1

The undertaker must, at or near a specified work, a structure which remains in the river Thames by virtue of article 8 (interaction with the 1968 Act) or a location where a specified function is being exercised, exhibit such lights, lay down such buoys and take such other steps for preventing danger to navigation as the PLA may from time to time reasonably require.

The PLA must give the undertaker not less than 20 business days’ written notice of a requirement under sub-paragraph (1) except in the case of emergency when the PLA must give such notice as is reasonably practicable.