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原文传递 Sample Size Implications of Multi-Day GPS-Enabled Household Travel Surveys. National Cooperative Highway Research Program (NCHRP) Research Results Digest 400

题名：	Sample Size Implications of Multi-Day GPS-Enabled Household Travel Surveys. National Cooperative Highway Research Program (NCHRP) Research Results Digest 400
作者：	Rizzo, L.; Erhardt, G. D.
关键词：	Highway problems##GPS-Enabled##Travel demand models##Figures(Data)##Synthesis##Pavement applications##Design manuals##Travel surveys##National Cooperative Highway Research Program (NCHRP)##Transportation Research Board (TRB)##
摘要：	There has long been interest in conducting travel surveys in which the same respondent provides information for multiple travel days, but such surveys have been limited by the challenge of ameliorating biases resulting from survey fatigue. More recently, new technology (in the form of GPS-enabled travel surveys) has made multi-day data collection more practical by offering the promise of a lower respondent burden. Despite this progress, questions remain about the value of additional days of survey data versus the value of additional respondents. NCHRP Project 08-36/Task 123 seeks to address these questions by (1) evaluating whether or not GPS-enabled multiday surveys overcome the survey fatigue challenges faced with multi-day diary surveys, (2) investigating the effects of using multi-day data for developing travel demand models, and (3) providing empirical evidence on the sample size implications of multi-day versus single-day surveys. These questions are explored using data from the 2012 Northeast Ohio Regional Travel Survey, a GPS-enabled household travel survey (HTS) in the Cleveland region. The survey featured a design in which (1) separate GPS-only versus GPS-with-promptedrecall samples were collected (allowing
总页数：	34
报告类型：	科技报告