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Cover your tracks

الموضوع في 'On Track.' بواسطة admin, بتاريخ ‏15 فبراير 2011.

  1. admin

    admin Founder Administrator

    إنضم إلينا في:
    ‏16 مارس 2005
    المشاركات:
    13,032
    عدد المعجبين:
    266
    الجنس:
    ذكر
    الوظيفة:
    Founder National Preservation
    مكان الإقامة:
    dover
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    More stringent European safety regulations now stipulate that new railway tunnels have to be designed as two separate single-track bores. Furthermore the track system must take into account the need for road vehicles to access the line in case of emergency. Double-track tunnels currently under construction are also being built with such vehicular access in [...]

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    admin, ‏15 فبراير 2011
    #1

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