According to The Ministry of Transport Notice on Issuing the Order for HighwayEngineering Standard Development / Revision Program 2010 (TGLZ 〔2010〕No.132), China Merchants Chongqing Communications Technology Research &Design Institute Co., Ltd., as the principal drafter, has undertaken the task of revising the Specifications for Design of Highway Tunnel ( JTG D702004)(hereinafter called the "previous edition").The previous edition has been comprehensively revised on the guiding principle of"safety, durability, economy, energy efficiency and environmental protection",on the basis of highway tunnel design & research achievements and experiencesacross China in recent years and fully drawing on domestic and internationalstandards and advanced technologies on highway tunnels. It has been approvedand issued for implementation as the Specifications for Design of Highway Tunnel Section 1 Civil Engineering ( JTG 3370. 12018) ( hereinafter called " this edition").