Railway Interchange 2019

Sessions Speakers Exhibitors Products Press Releases Floor Plan Buzz

Signal Modernization at Stockholm Metro (Room 205 B)

24 Sep 19
8:30 AM - 9:00 AM

Tracks: AREMA Technical Sessions By Date- Communications & Signals, AREMA Technical Sessions By Functional Group- Communications & Signals, Technical Sessions By Day- Tuesday

Stockholm Metro has a diverse and complex network with light rail, suburban rail and subway systems. Its signaling systems are a mix of computerized and relay-based interlockings, with modern, centralized traffic management systems. Maintaining and upgrading these systems to the standards of a modern mass transit facing ever increasing passenger numbers is challenging, from a cost and resource perspective as well as from a safety perspective. In order to address this, Stockholm Metro has deployed modern Signal Design Automation processes covering both safety verification and development of interlocking application software. In this paper we will take a closer look at two distinct projects of Stockholm Metro; the extension of one of the subway lines using legacy Union Switch & Signal relay-based interlocking and the capacity increase project on a suburban rail line utilizing modern computerized interlockings. The relay-based interlockings are designed using traditional methods but with automatic checks of schematics, and safety is verified with automated formal verification. The computerized interlockings are generated, tested and verified with a design automation process based on generic and formalized requirement specifications. *Missed this Session or want to view it again? Stop by the VirtualAREMA kiosk located in the Registration area to purchase this product today!