CONTENTS List of Figures xvii List of Tables xxi 1 Introduction 2 2 Defining the Scope of a Ling-Distance Travel Survey 8 3 Long-Distance Diaries Today : Review and Critique 28 4 What is Known? 46 5 The 1995 Austrian NTS Long-Distance Survey 72 6 Mest Survey Work 86 7 How Reliable are Household Surveys for the Description of Air Travel 110 8 Combining Surveys of Daily and Long-Distance Mobility : an Empirical Investigation of Non-Response Problems 122 9 Analysis on Mest and Related Survey Work 134 10 Weighting and Correcting Long-Distance Travel Surveys 152 11 Imputation with Non-Ignorable Missing Values : a Stochastic Approach 172 12 New Correction Methods : Neural Nets, and Self-Organising Maps 188 13 Sample Selection 206 14 PDA -based CASI : Implementation and Experiences 224 15 A Toolbox Approach to Data Correction and Imputation 244 16 GIS-based Enrichment 256 17 A World Wide Web Interface for Travel Diary Analysis 278 18 Recommendations for a European Survey of Long-Distance Travel and Associated Research 298 Summary of References 320 Index 338