The present vision of the South African National Roads Agency Limited (SANRAL) is to encourage innovative technology and appropriate solutions in as transparent a procurement manner as possible. A particular roads rehabilitation contract was considered an ideal project to implement this innovative rehabilitation strategy on a guarantee system. When tenders were called for, the contractors were provided with information detailing the pretreatment works considered necessary for structural repairs to the existing asphalt base and surfacing. The contractors had, however, the option to indicate their own pretreatment and methodology for these repairs. The integrity of these repairs had to be monitored on the basis of predefined minimal functional parameters assessed visually and by instrument, that must be met after a period of two, four, and six years. To ensure that SANRAL is covered for non-conformance during these periods a system of reducing bank guarantees was prescribed as an integral part of the contract. For the covering abstract see ITRD E135448.
Abstract