THE Metropolitan Manila Development Authority (MMDA) on Friday advised motorists to brace for heavy traffic this weekend. This, according to the MMDA, is due to the resumption of the repair and re-blocking of some roads in the metropolis by the Department of Public Works and Highways (DPWH). In its advisory, MMDA said the repair work covers roads in the cities of Quezon and Caloocan. In Quezon City, the roads to be repaired include: Along C.P. Garcia Ave. between E. Jacinto Street and Delos Reyes Street (going Katipunan Ave. third lane from sidewalk).