Synopsis
This paper explores design strategies to improve the economic viability of double-decker sleeping cars. Findings from Project “AliSa” reveal that accommodating two double cabins per deck within the G1-profile is unfeasible. Reclining armchair seating emerges as a promising alternative, offering flexibility and positive passenger reception. A novel configuration combines private cabins, overnight armchairs, and turnover armchairs, optimised through linear programming simulations. Results show turnover armchairs are more profitable in high-demand scenarios, while night armchairs are better suited for lower-demand situations.
