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1 CHAPTER 1 1. INTRODUCTION This document represents the technical appendix to the main report of NCHRP project 8-37, published as NCHRP Report 571: Standardization of Personal Travel Surveys. It contains chapters that elaborate on and provide background to the main report. Chapter 2 of the Technical Appendix is a summary of the literature reviewed for this project and provides useful background on the state of the practice in household and personal travel surveys, definition and application of standards to surveys in the social and marketing sciences, and other related issues. Chapter 3 provides a brief review of the process that was used to determine what issues would be covered in this research, and how these were then classified. Chapters 4 through 10 provide the detailed background for the standardized procedures that are proposed in the main report. Chapter 11 provides the references that are used in this Technical Appendix. Each of chapters 4 through 10 are organized to provide a brief definition of the topic, background, or introduction at the outset, followed by a discussion of the research and reviews that were undertaken. Recommendations for adoption of standardized procedures, or for guidelines are not provided in these chapters, because they are to be found in the main report. A cross reference to the main report is provided, however, at the end of each section.
