National Household Travel Survey, 2013 Technical Report Statistics South Africa Pali Lehohla Report No. 03-20-01 (2013) Statistician-General Statistics South Africa ii National Household Travel Survey, 2013: Technical Report / Statistics South Africa Published by Statistics South Africa, Private Bag X44, Pretoria 0001 © Statistics South Africa, 2014 Users may apply or process this data, provided Statistics South Africa (Stats SA) is acknowledged as the original source of the data; that it is specified that the application and/or analysis is the result of the user's independent processing of the data; and that neither the basic data nor any reprocessed version or application thereof may be sold or offered for sale in any form whatsoever without prior permission from Stats SA. Stats SA Library Cataloguing-in-Publication (CIP) Data National Household Travel Survey, 2013: Technical Report / Statistics South Africa. Pretoria: Statistics South Africa, 2014 Report 03-20-01 44 pp ISBN 978-0-621-42571-0 A complete set of Stats SA publications is available at Stats SA Library and the following libraries: National Library of South Africa, Pretoria Division National Library of South Africa, Cape Town Division Library of Parliament, Cape Town Bloemfontein Public Library Natal Society Library, Pietermaritzburg Johannesburg Public Library Eastern Cape Library Services, King William’s Town Central Regional Library, Polokwane Central Reference Library, Nelspruit Central Reference Collection, Kimberley Central Reference Library, Mmabatho This report is available on the Stats SA website: www.statssa.gov.za Enquiries: Tel: (012) 310 8358 (012) 310 8093 Email: [email protected] [email protected] National Household Travel Survey 2013 – Technical report Statistics South Africa iii Contents 1. Introduction ............................................................................................................................... 1 2. Questionnaire design ............................................................................................................... 2 3. Sample design .......................................................................................................................... 4 3.1 Design of the sampling frame .................................................................................................. 4 3.2 Variable composition of the frame ........................................................................................... 8 3.3 EA (PSU) sample .................................................................................................................... 8 3.3.1 Stratification and sample allocation to strata ........................................................................... 8 3.3.2 Sampling of PSUs with probability proportional to size ........................................................... 9 3.4 Listing verification .................................................................................................................. 11 3.4.1 Introduction ............................................................................................................................ 11 3.4.2 Verification methodology ....................................................................................................... 12 3.4.3 DU frame ............................................................................................................................... 13 3.5 DU sample ............................................................................................................................. 14 3.6 Weighting ............................................................................................................................... 15 4. Data collection ........................................................................................................................ 16 5. Data collection debriefing ....................................................................................................... 18 5.1 Planning (Survey methodology and sampling) ...................................................................... 19 5.1.1 Successes ............................................................................................................................. 19 5.1.2 Shortcomings ......................................................................................................................... 19 5.1.3 Changes made to baseline plan/scope ................................................................................. 19 5.1.4 Recommendations ................................................................................................................. 19 5.2 Recruitment ........................................................................................................................... 20 5.2.1 Successes ............................................................................................................................. 20 5.2.2 Shortcomings ......................................................................................................................... 20 5.2.3 Changes made to baseline plan/scope ................................................................................. 20 5.2.4 Recommendations ................................................................................................................. 20 5.3 Geography and listing ............................................................................................................ 20 5.3.1 Successes ............................................................................................................................. 20 5.3.3 Changes made to baseline plan/scope ................................................................................. 21 5.3.4 Recommendations ................................................................................................................. 21 5.4 Training .................................................................................................................................. 21 5.4.1 Successes ............................................................................................................................. 21 5.4.2 Shortcomings ......................................................................................................................... 21 5.4.3 Changes made to baseline plan/scope ................................................................................. 21 5.4.4 Recommendations ................................................................................................................. 21 National Household Travel Survey 2013 – Technical report Statistics South Africa iv 5.5 Publicity ................................................................................................................................. 21 5.5.1 Successes ............................................................................................................................. 21 5.5.2 Shortcomings ......................................................................................................................... 22 5.5.3 Changes made to baseline plan/scope ................................................................................. 22 5.5.4 Recommendations ................................................................................................................. 22 5.6 Data collection ........................................................................................................................ 22 5.6.1 Successes ............................................................................................................................. 22 5.6.2 Shortcomings ......................................................................................................................... 22 5.6.3 Changes made to baseline plan/scope ................................................................................. 23 5.6.4 Recommendations ................................................................................................................. 23 5.7 Logistics ................................................................................................................................. 23 5.7.1 Successes ............................................................................................................................. 23 5.7.2 Shortcomings ......................................................................................................................... 23 5.7.3 Changes made to baseline plan/scope ................................................................................. 23 5.7.4 Recommendations ................................................................................................................. 23 6. Response rates and measures of quality ............................................................................... 24 7. Limitations of the study ........................................................................................................... 25 8. Comparability with previous surveys ...................................................................................... 25 National Household Travel Survey 2013 – Technical report Statistics South Africa 1 1. Introduction The first National Household Travel Survey (NHTS) was conducted in 2003, and the second survey was executed by Statistics South Africa (Stats SA) from February to March 2013. The aim of the NHTS is to gain strategic insight into the travel patterns and transport problems