Your application proposes to apply the Railway Industry Standard (RIS) 7016-INS Issue 1.2, Part 9.4, which allows:
1. A visual marking to mark the edge of the danger area (1500mm away from the edge of the platform based on your station risk assessment);
2. A tactile surface to mark the edge of the platform to aid the visually impaired in boarding the trains (760mm away from the edge of the platform, as per current industry practice); and
3. Other mitigations, like audio announcements at the station, to be employed to reduce the risk to passengers in not marking the edge of the danger area through a tactile surface.
Your letter explained that this RIS-7016-INS is based on the RSSB research paper T1118 (“Optimising the design and position of platform markings designed to keep people away from the platform edge”). This research paper demonstrated that the tactile paving to mark the edge of the platform should remain in a consistent place across the network, and that other mitigating measures should be employed to ensure passengers stand at a safe place on the platform.