原文传递
CHANGES IN HORIZONTAL ALIGNMENT DESIGN STANDARDS IN AUSTRALIA AND CANADA.
| 题名： | CHANGES IN HORIZONTAL ALIGNMENT DESIGN STANDARDS IN AUSTRALIA AND CANADA. |
| 作者： | McLean-JR; Morrall-J |
| 关键词： | Alignment-; Australia-; Canada-; Design-practices; Design-standards; Friction-; Highway-curves; Horizontal-alignment; Icy-roads; Operating-speed; Superelevation- |
| 摘要： | Some 25 years ago, horizontal alignment design standards in both Australia and Canada closely resembled those recommended by the American Association of State Highway Officials (AASHO). Subsequent developments in curve design in both countries have resulted in a divergence in design practices. These developments, and the reasons for them, are reviewed. Developments in Canada have been in response to concerns with the very low levels of friction provided by icy roads and have involved reductions to design side friction factors for high speed alignments and changes to superelevation practice. Road surface friction is less of a problem in Australia and the major change has been the development of operating speed approaches to designing lower speed alignments with a view to providing satisfactory low cost alignments in difficult terrain. However, when allowance is made for the different design speed concepts, the actual differences in practice are not as great as would appear from a cursory comparison of the specified standards. |
| 总页数： | Conference Title: International Symposium on Highway Geometric Design Practices. Location: Boston, Massachusetts. Sponsored by: American Association of State Highway and Transportation Officials |
| 报告类型： | 科技报告 |
相关文献
- ALCOHOL INVOLVEMENT IN SNOWMOBILE FATALITIES IN CANADA.
- Streamlining and Integrating Right-of-the Way and Utility Processes with Planning, Environmental and Design Processes in Australia and Canada.
- REVIEW OF INTERNATIONAL DESIGN SPEED PRACTICES IN ROADWAY GEOMETRIC DESIGN.
- CRIMINAL AND ADMINISTRATIVE PROCEDURES FOR DEALING WITH DWI OFFENDERS IN CANADA.
- IMPACT OF THE 1985 AMENDMENTS TO THE DRINKING DRIVING SECTION OF THE CRIMINAL CODE OF CANADA.
- Review of Australian NCAP since ESV 1998.
检索历史
应用推荐
