Underground Railways Providers The training is the product of a unique collaboration between leading industry clients, including Tran4M. The Underground railways sector day focuses on those issues which are highly relevant to those people who work on or around the underground railways. You can download PDFs of our information and view them using Adobe Acrobat 5.0 or higher. Download Course Providers PDF   1 page, 12 kilobytes © Safety Pass Alliance 1999-2008