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Cover your tracks

Тема в разделе 'On Track.', создана пользователем admin, 15 фев 2011.

  1. admin

    admin Founder Administrator

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    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 фев 2011
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