Paragraph 28 Traffic signal equipmentI1

The undertaker must permit the highway authority access at all reasonable times to any part of the site upon which the highway works are being carried out and in which cables, pipes, ducts or other apparatus associated with the traffic signal equipment is to be or are located to enable the highway authority to undertake works reasonably required for the maintenance of the said cables, pipes, ducts or other apparatus including any works which are undertaken to improve the performance of the traffic signals.