AASHTO Guidelines for Geometric Design of Very Low Volume Local Roads

AASHTO Guidelines for Geometric Design of Very Low-Volume Local Roads

AASHTO Guidelines for Geometric Design of Very Low-Volume Local Roads

AASHTO Guidelines for Geometric Design of Very Low Volume Local Roads (ADT ≤ 400), 1st Edition Guidelines for Geometric Design of Very Low-Volume Local Roads addresses the unique design issues highway designers and engineers face when determining appropriate cost-effective geometric design policies for very low-volume local roads. This approach covers both new and existing construction projects.

Because AASHTO Guidelines for Geometric Design of Very Low Volume Local Roads differs from the policies applied to high-volume roads, these guidelines may be used in lieu of A Policy on Geometric Design of Highways and Streets, also known as “The Green Book.” Design values are presented in both metric and U.S. customary units.
Includes errata, which may also be downloaded below.

AASHTO Guidelines for Geometric Design of Very Low Volume Local Roads (ADT ≤ 400), 1st Edition Foreword As highway designers, highway engineers strive to provide for the needs of highway users while maintaining the integrity of the environment. Unique combinations of design requirements that are often conflicting result in unique solutions to the design problems. The geometric design of very low-volume local roads presents a unique challenge because the very low traffic volumes and reduced frequency of crashes make designs normally applied on higher volume roads less cost effective.

The guidance supplied by this text, AASHTO Guidelines for Geometric Design of Very Low Volume Local Roads (ADT ≤ 400), 1st Edition, addresses the unique needs of such roads and the geometric designs appropriate to meet those needs. These guidelines may be used in lieu of the guidance in A Policy on Geometric Design of Highways and Streets, also known as the Green Book. The guidance presented here will be incorporated in a future edition of that policy.

The guidelines for geometric design of very low volume local roads are the result of a research and development process initiated by AASHTO in 1996. These guidelines were initially developed through two projects of the National Cooperative Highway Research Program (NCHRP), which is jointly sponsored by AASHTO and FHWA. After completion of the NCHRP research, these guidelines went through the normal AASHTO review process. During the development process, representatives of other interested organizations such as the National Association of County Engineers, the American Society of Civil Engineers, the U.S. Forest Service, the American Public Works Association, and the National League of Cities have participated in review of the guidelines.

Design values are presented in this document in both metric and U.S. customary units and were developed independently within each system. The relationship between the metric and U.S. customary values is neither an exact (soft) conversion nor a completely rationalized (hard) conversion. The metric values are those that would have been used had the policy been presented exclusively in metric units; the U.S. customary values are those that would have been used if the policy had been presented exclusively in U.S. customary units. Therefore, the user is advised to work entirely in one system and not attempt to convert directly between the two.

ISBN Number : 1-56051-166-4
Item Format : Paperback
Item Pages : 94 page
Download type : PDF File, AASHTO Guidelines for Geometric Design of Very Low Volume Local Roads


File Type : PDF File AASHTO Guidelines for Geometric Design of Very Low Volume Local Roads



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