Source: https://tendernation.io/opportunities/01a13bc2-f8fc-70db-8f5c-cba8873ac062/978799118-978798928-market-engagement-questionnaire-for-t1398-t1399-accessible pending GB open procedure # 978799118 978798928 Market Engagement Questionnaire for T1398 – T1399 accessible boarding [Rail Safety Standards Board (RSSB)](https://tendernation.io/buyers/rail-safety-standards-board-rssb) Estimated value £210,000 Published 8 Sept 2025 Deadline Rolling deadline ## Who can bid - Open procedure Anyone can submit a full tender; there is no shortlisting stage. ## About this tender The range of stepping arrangements at the Platform Train Interface (PTI) on the GB network presents issues for safe and independent boarding across the GB rail network. Variations in platform height, train floor level, door opening treadplates and platform curvature create vertical and lateral stepping distances that present accessibility as well as safety and operational challenges, particularly for passengers with reduced mobility or other access needs. These challenges also affect dwell times, operational performance, and passenger confidence. While previous research has provided valuable insights into PTI geometry, human factors, and accessibility implications, the industry still lacks a useable classification system that links physical PTI geometry measures to accessibility levels. An evidence-based framework is needed to guide cost-effective interventions and prioritise investment in boarding accessibility. To address this gap, RSSB together with NR System Operator is scoping two complementary research projects. We are seeking supplier input into the scoping activity underway. Please provide your views on the questions specified within the documentation: For more information about this opportunity, please visit the Delta eSourcing portal at: [delta-esourcing.com](https://www.delta-esourcing.com/tenders/UK-UK-London:-Research-services./7V297ESNT8) To respond to this opportunity, please click here: [delta-esourcing.com/respond/7V297ESNT8](https://www.delta-esourcing.com/respond/7V297ESNT8) Read full description ## CPV classification Research services Source Find a Tender (UK) · Notice ocds-h6vhtk-059619-2025-09-08T16:05:13+01:00 [View official notice](https://www.find-tender.service.gov.uk/Notice/ocds-h6vhtk-059619-2025-09-08T16:05:13+01:00) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. 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