sentences:  In Victoria, SOS has had significant influence on residential planning policy, most notably on the importance of neighbourhood character within the state's planning scheme and its delineation in the residential design code, 'ResCode', implemented in 2001.SOS's influence can also be seen in some of the key components of the Metropolitan Strategy, Melbourne 2030 regarding the focus on intensification of 'activity centres' in line with Transit-oriented development (TOD) principles and on aiming to protect existing residential areas.SOS formation and rapid growth was a reaction to the planning policies of the Kennett government in Victoria during the 1990s, in particular the planning code known as 'The Good Design Guide for Medium Density Housing'.