This paper explores the transformation of rail signal sighting, a process traditionally fraught with challenges, through the lens of digital technology. We delve into how digital tools have not only enhanced the accuracy of signal sighting but also democratised the process, making it accessible to a broader spectrum of stakeholders.
Rail signal sighting, once confined to 2D schematic drawings and physical site-based activities, was a process riddled with constraints. These constraints, often introduced by trackside equipment and underground services, were not evident in 2D documentation, leading to a latency in feedback between design and rail signal sighting committees. This disconnect often resulted in human error, causing construction delays and necessitating site rectification works.
Enter UNITY Alliance, which harnessed the power of structured data and automation to revolutionise this process. By deriving 3D model elements from 2D schematic drawings, UNITY Alliance enabled virtual signal sighting and clash detection with in-ground services and rolling stock dynamic kinematic envelopes in the project’s cloud-based coordination platform.
The 3D model content, being easily interpreted, opened the door for all stakeholders to engage and collaborate safely (outside of the rail corridor) from various geographical locations. This collaboration led to the development of technical solutions during the design phase using a range of digital technologies, including fly-through simulations and immersive virtual reality environments. This paper presents a real-world case study of a major Brisbane-based rail project where virtual signal sighting was successfully implemented. We shed light on the effective implementation strategy, the challenges encountered, the lessons learned, and how the 3D models are sparking innovation for the end asset owners.