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Titelblatt. Design Characteristics of National Travel Surveys An Update for Ten Countries by Uwe Kunert German Institute for Economic Research DIW-Berlin Germany Presentation at the COST Action 355 Meeting Namur December 1- 3 2004. NTS International: Outline.

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Titelblatt

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  1. Titelblatt Design Characteristics of National Travel Surveys An Update for Ten Countries by Uwe Kunert German Institute for Economic Research DIW-Berlin Germany Presentation at the COST Action 355 Meeting Namur December 1- 3 2004

  2. NTS International: Outline • History and Context of the NTS in Germany • Approach and Design for the Pilot Study • Key Characteristics of NTS in 10 Countries • Conclusions • www.MiD2002.de – Mobility in Germany

  3. NTS International: Basic Design Elements of KONTIV-Surveys in West-Germany

  4. NTS International: Survey Context • No Institutional Continuity for NTS in Germany • Long Time Interval Since Last Survey • No NTS for East-Germany • Methodological Developments in Survey Design • Little Scientific Knowledge-Sharing for Methodology

  5. MAIN SURVEY (December 2001 to End 2002) • Collection of Information of the Whole Household • Survey Guided by Fixed Diary-Dates and Lasting 12 Months NTS International: Approach KONTIV 2002 • PILOT STUDY (Summer 2001) • Decisions Concerning Core Components and Options • Experimental Design (2,400 Households) • Including a Combination of Different Survey Methods • (Mail Only and a Mixed Mode by Phone/Mail)

  6. GB DK NL USA N D CH A F B NTS International: Countries

  7. NTS International: Timing in the ‘70s, ‘85/‘86, since ‘88 continuously since ‘78 annually ‘84/‘85, ‘91/‘92, ‘97/‘98, 2001 ‘74, ‘79, ‘84, ‘89, ‘94, 2000, 2005 ‘59, ‘66/‘67, ‘73/‘74, ‘81/‘82, ‘93/‘94‘, possibly 2003 GB NL N CH F

  8. NTS International: Timing ‘75, ‘81, ‘86, since ‘92 annually, discontinued 2001 ‘69, ‘77, ‘83, ‘90, ‘95, 2001 ‘75/‘76, ‘82, ‘89, 2002 ‘83, ‘95 ‘98/‘99 DK USA D A B

  9. NTS International: Survey Process and Modes Interviewer, questionnaire, Interviewer Postal, questionnaires, motivation by telephone Telephone Interview (CATI), SAQ for long trips CATI, announcement of the interview by letter Face to face interviews GB NL N CH F

  10. NTS International: Survey Process CATI, announcement of the interview by letter Mailed Travel Diary, CATI Mix of CATI and SAQ SAQ, Interviewer, control sample by post or telephone Mixed: postal (SAQ) and telephone (CATI) DK USA D A B

  11. NTS International: Sampling Sampling Frame Post Office Address File Addresses of Dutch Households Telephone Data Base RDD National Telephone Register 1990 Census Sample Sample Size 7,000 Persons 65,000 Persons 6+, 5,000 <6 18,000 Persons 29,000 Persons 14,000 Households GB NL N CH F

  12. NTS International: Sampling Sampling Frame Public Register List-assisted RDD Public Registers Random Sampling, Household Database National Register Sample Size 15,000 Persons 26,000 Households +RAO 60,000 Persons + 26,000 Households +RAO 62,000 Persons + 12,783 Households 9,459 Households DK USA D A B

  13. NTS International: Recall Period and Diaries • Diary • simple diary • no • no (car 7 days) Recall Period 7 day diary day by day 1 day 1 (to 3) days 1 day 1 day (Mo-Fr) + last weekend GB NL N CH F

  14. NTS International: Recall Period and Diaries • Diary • simple diary • Customized SAQ / memory jogger Recall Period 1 day 1 day 1 day 1 day 1 day DK USA D A B

  15. NTS International: Long Distance Trips Long Trip Definition > 50 miles - 100 km Overnight stay not at home 100 km Recall Period 3 weeks - 1 month unlimited (last trip) 3 months by interview + 3 months by SAQ GB NL N CH F

  16. NTS International: Long Distance Trips Long Trip Definition 100 km 50 miles Overnight stay > 80 km > 200 km Recall Period 1 month 4 weeks 3 months 2 weeks 4 weeks DK USA D A B

  17. NTS International: Segmented Trips Mode, time, distance Mode (public transport), time, distance Mode, time, distance Mode, time, distance Mode GB NL N CH F

  18. NTS International: Segmented Trips Mode, time, distance Mode (public transport), time Mode ?? Mode, time, distance DK USA D A B

  19. NTS International: Travel as Job No - generally excluded Until ‘98 yes, 1999-2000 no No No (CATI without stages) No GB NL N CH F

  20. NTS International: Travel as Job Yes (for persons who have transportation duties as major part of their jobs: km and mode) Some yes/no information Yes, module with less detail but additional variables No Yes (special question about trips for the job) DK USA D A B

  21. NTS International: Vehicle Mileage • Odometer Reading • - • Estimated Annual Mileage GB NL N CH F

  22. NTS International: Vehicle Mileage • Odometer Reading • - • - • Estimated Annual Mileage • - DK USA D A B

  23. NTS International: NRP-Survey - WWW-Presentation WWW-Presentation Methodology, results - data (soon, system in development) Results (soon) No Methodology, results - data planned No NRP-Survey No - (planned for 2002) No - (soon) No Yes No (no need => post-stratification) GB NL N CH F

  24. NTS International: NRP-Survey - WWW-Presentation WWW-Presentation Methodology, results Methodology, results, data Methodology, results No Methodology, results, data NRP-Survey Yes No Yes Yes Yes DK USA D A B

  25. NTS International: Conclusions • Objectives and Core Contents of all NTS similar • Methodological Diversity in all Design Elements • Institutional Aspects

  26. NTS International: KONTIV 2002 Survey Process Population register sample, Basic sample: 300 municipalities Add-ons: 200 municipalities improved telephone number search not successful successful appr. 40 % Mail: mailout (survey information and household questionnaire) appr. 60 % CATI: mailout (survey information and introductory letter) reminder Return level 1 household questionnaire no return Non-Response: CATI with basic questionnaire refusal recruiting of households Return level 2 household questionnaire without telephone number in hh-quest. with telephone number in hh-quest. Mailout memory jogger reminder call reminder no return mailout of person and trip questionnaire CATI person and trip information Non-Response: CATI with basic questionnaire refusal Return level 1 person questionnaire Return level 2 person questionnaire refusal Data bank Non-Response: personal basic questionnaire

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