The repair of bituminous road includes the following works: 1. Removal of all deteriorated material of the pavement courses until the root cause of the failure is identified.  2. Trimming of the excavated sides to provide firm vertical faces. 3. Replacement of material with the standard which was originally specified for the pavement layer. 4. Painting of tack coat onto the sides and bases of excavations prior to placing of any bituminous materials. 5. Compaction and finishing of the surfaces of all patches to form a smooth continuous surface, level with the surrounding road.