TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 230: Developing an Expanded Functional Classification System for More Flexibility in Geometric Design, which documents the methodology of NCHRP Research Report 855: An Expanded Functional Classification System for Highways and Streets builds upon preliminary engineering of a design project, including developing the purpose and need.
In particular, NCHRP Web-Only Document 230 provides additional contexts beyond urban and rural, facilitates accommodation of modes other than personal vehicles and adds overlays for transit and freight.
Two case studies illustrating an application of the expanded system to actual projects are included.
Table of Contents
|Chapter 1. Introduction and Research Approach||1-4|
|Chapter 2. Literature Synthesis||5-28|
|Chapter 3. Existing Classification Uses||29-36|
|Chapter 4. Alternative Classification Systems||37-124|
|Chapter 5. Proposed Functional Classification System||125-166|
|Chapter 6. Expanded FCS Implementation||167-176|
|Chapter 7. Conclusions and Future Research||177-182|
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