JTG D20-2006 - Highway Route Design Specification

Author: China Road and Bridge Corporation First Highway Survey and Design Research Institute
Editor: China Road and Bridge Corporation First Highway Survey and Design Research Institute
Publisher:
Publish Date: 2006-09-01
Features: This specification was revised based on the requirements of the Ministry of Communications' document No. 82, "Notice on Issuing the Work Plan for the Compilation and Revision of Construction Standards, Specifications, and Quotas in 1998," dated 1999. During the revision process, the Ministry of Communications decided to revise the "Technical Standards for Highway Engineering" (JTJ001—97) in April 2001 and required the drafting group to revise the "Specification for Highway Route Design" (JTJ011—94) simultaneously while revising the standards. The "Technical Standards for Highway Engineering" (JTGB01—2003) was officially promulgated and implemented on March 1, 2004, and this specification was completed based on it. Currently, China is in a period of large-scale highway construction. How to learn from and summarize the experiences and lessons of highway construction at home and abroad, carry forward the past and open up the future, and align with national conditions to ensure that China's highway construction meets the transportation needs of the present generation while providing safe and comfortable transportation modes, and also maintains harmony with the natural and social environment to meet the sustainable development needs of future generations, requires a "leapfrog" advancement in design philosophy. Therefore, this draft was supplemented and improved in accordance with the highway design philosophy established at the National Highway Survey and Design Work Conference in 2004. Subsequently, it was adjusted and revised according to the principles and opinions on the compilation of design specifications and design details from the Highway Department, and the content related to "how to do it" in the design specification was deleted. The main revisions to the "Specification for Highway Route Design" (JTJ011—94) in this revision are as follows:
1. According to the provisions of the "Technical Standards for Highway Engineering" (JTGB01--2003), revisions were made to highway classification and design speed, highlighting the design philosophy of emphasizing highway functions and selecting different design speeds based on design sections.
2. The chapter on "Highway Capacity" has been expanded to include content on traffic volume, capacity, vehicle conversion factors, and service levels.
3. The specification was revised and improved in accordance with the principle that highway construction must comply with "safety, environmental protection, and sustainable development" and the highway design philosophy.
4. Methods for testing using "operating speed" and "safety evaluation" were introduced, along with the "full-life" design concept.
5. The chapter on "Highway and Highway at Grade Intersections" has been expanded to include traffic management methods, introducing signalized intersections, and supplementing and improving relevant key technical indicators for unized intersections,ized intersections, and roundabout intersections.
6. The chapter on "Highway and Highway Grade Separators" has been supplemented and improved with relevant key technical indicators.
All relevant units are requested to report any issues and suggestions to China Road and Bridge Corporation First Highway Survey and Design Research Institute (Address: No. 63, Science and Technology Second Road, High-Tech Development Zone, Xi'an, Shaanxi Province, Zip Code: 710075) for reference in the next revision.