Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO GPF:2004
• Năm ban hành / Publication date: 2004
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Guide for the Planning, Design, and Operation of Pedestrian Facilities
• Số trang / Page: 142

Phạm vi áp dụng / Scope of standard

The scope of this guide includes planning, design, and operation
of both existing and new pedestrian facilities. Although these
guidelines can be applied to existing pedestrian facilities, it is
usually most practical to implement these guidelines when a new
facility is constructed or an existing facility is being
reconstructed. This guide is not intended to set forth strict
standards, but to present sound guidelines that provide for the
needs of pedestrians and other roadway users. However, in some
areas of the guide, design criteria have been provided to indicate
suggested minimums. Where deviations from these suggested minimums
or from an agency's guidelines are needed, the deviations should be
considered on the basis of an engineering study and the rationale
for not conforming to this guide or an agency's guidelines should
be documented.

The construction of a highway or street project, including any
associated pedestrian improvements, is the culmination of a
planning and design process that is often lengthy and complex, and
involves many agencies and individuals. During each step of the
process, important decisions are made that affect subsequent steps
and the overall design outcome. This project development process
has four distinct phases. State departments of transportation
(DOTs) and other transportation agencies use a range of terminology
to describe the process. For the purposes of discussion, the
following outlines the process and terminology:

• Concept Definition-The identification of a project,
including its need, geographic limits, community context, and other
specifics to enable feasibility studies to begin.

• Planning and Alternatives Development-The broad range
of activities that balances competing interests, resulting in the
selection of a preferred plan that meets regulatory requirements
and is sufficiently detailed to proceed with final design and
construction.

• Preliminary Design-The initial phase in the final
design process.

• Final Design-Completion of construction documents and
specifications for the construction of a project.