Paragraph 4 Provisional certificate and maintenance periodI1

When and so soon as each phase of the highway works has been completed including such road safety audits as required in accordance with paragraph 27 to the reasonable satisfaction of the director, the director must issue a provisional certificate, such certificate not to be unreasonably withheld or delayed, and the undertaker at its own expense must maintain that phase of the highway works in a good state of repair and to the satisfaction of the director for the duration of the maintenance period and must carry out such routine maintenance as may be necessary or required by the director to facilitate use by the public; and for the avoidance of doubt the undertaker must undertake all other work and maintenance in respect of that work including but not limited to any damage until issue of the final certificate in respect of that phase under paragraph 5 and that phase of the highway works becomes highways maintainable at the public expense.