JTG/T D71-2004 in English

本规范适用于高速公司、一、二级公路的新建隧道和改建隧道，三、四级公路的新建隧道可参考使用。

Scope

In order to standardize the design of highway tunnel traffic engineering, unify the design requirements of highway tunnel traffic engineering, ensure the safety of driving in highway tunnels, ensure smooth operation and service levels, and enable the design of highway tunnel traffic engineering to achieve the goals of reasonable design, advanced technology, economical applicability, and quality assurance. , specially formulated this specification. The specifications apply to new tunnels and reconstructed tunnels on expressways, first- and second-class highways, and can be used as a reference for new tunnels and reconstructed tunnels on third- and fourth-class highways.