Abstract
As the silver population rapidly increased, it became more urgent to establish a scheme of the traffic safety for the old. As part of the scheme, a polity to apply 'designation of the silver zone' was legislated into law. However, the standard quoting 'the silver zone should be within 300m - radius of the relevant facility' was considered homogeneous and even limited to apply its original objective. This study was to introduce a new standard to select the silver zone reflecting the actual scale. Consequently, I hope that this study would be useful reference for further development and the approach in the research could be legislated into law for more efficient designation and operation of the silver zone.
