For existing low-lying and flood-prone roads, the road levels would be raised in either in conjunction with drainage upgrading works or LTA’s road upgrading works. One example is the raising of Orchard Road, which will give it an additional flood protection against intense rainfalls experienced in June 2010. When an area is earmarked for redevelopment, PUB will review the drainage system in that area and raise the building and road levels to increase the level of flood protection..