"Rail Technical Strategy" is published alongside the White Paper "Delivering a Sustainable Railway (Cm. 7176)" (ISBN 0101717628) which identifies the needs that the railway is likely to have to meet over the next 30 years.Over this period, the railway will have to: expand capacity to meet demand; reduce environmental impact; meet increasing customer expectations for reliability, comfort, safety, security and information; and continue to improve its cost efficiency.Long-term themes for change identified include: optimised track-train interface; high reliability, high capacity; simple, flexible, precise control system; optimised traction power and energy; an integrated view of safety, security and health; improved passenger focus; rationalisation and standardisation of assets; and differentiated technical principles and standards.