1. Railway applications. External visible and audible warning devices. Audible warning devices for urban rail Part 4, (23rd January 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Railway applications. External visible and audible warning devices. Warning horns for heavy rail Part 2, (22nd January 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (24 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗