Household travel surveys how to carry them out ? Method and a few results

1. Household travel surveys how to carry them out ? Method and a few results

2. « Certu standard  » household travel surveys • The implication of the Ministry of Transport : funding and methodology • Main characteristics • Use of the results : transport planning, evaluation • A few general results

3. Local travel surveys in urban areas : big towns EMD large areas EDGT medium size towns EDVM and a National Transport Survey ENT Standardized and consistent travel surveys

4. Funding A subsidy (20 % of the cost of the survey) if the Certu method is used, the Certu control accepted and the files given to the Ministry of Transport A free assistance to the local authority to carry out the survey (10 % to 20% of the total cost) Ministry of transport involved in local travel surveys (1)

5. Ministry of transport involved in local travel surveys (2) Methodology • A free assistance by Certu to the local authorities in charge of transport policy : information and advice about surveys (by mail, telephone, and a worshop of one day) • Certu built standardized methods, gives all the elements needed to carry out the survey (questionnaires, documents required, training kit, etc.) • Certu checks if the method is respected and validates it : 5 steps of control

6. Certu builds a standardized method • A guidebook has been published, sold on our website : www.certu.fr • All the material needed is on a Cd Rom joined to the guidebook (questionnaires, letters, list of controls required, etc.)

7. « Certu standard » method • Described in detail in the guidebook : • Management of the survey • Sample drawing • Quality control of data colelction • Data files building • Standard exploitation of the results • Use for models, environmental diagnosis

8. Training kit Two days of training for the interviewers : • Definitions, method • Training exercices • Two training surveys Given to local authorities carrying out a survey with the «  Certu standard  » method

9. Questionnaire 4 parts : • Household : housing, motorisation, vehicles parking, composition of the household • Persons : socio-démographic characteristics (age, profession, etc.), practice of the different transport modes • Trips : all those made the previous day, origine, destination, activity done, mode, time, place • Opinion on transports, priorities to give locally in the city life

10. The sample • An urban area broken down into sectors, as homogeneous as possible in terms of urban and social structure • An exhaustive file of main residences • A sample selected at random, large enough to ensure minimum reliability of the results allowing a cross-sectional analysis • Sample rate : 1% to 2% A representative sample

11. Who and how ? • Face-to-face, at home in the urban areas (EMD), telephone in the other areas (EDGT, EDVM) • EMD : all people aged 5 and above in the household, face-to-face, at home • EDGT and EDVM : one or two people in the household (depending on the size of it) aged 11 and above, telephone

12. When and what ? • A working day (surveys carried out from Tuesday to Saturday on the trips made the previous day) • 10 weeks of data collection (EMD), 7 weeks (EDVM and EDGT), in the period from 15 October to 30 April (bank holidays and school holidays excuded) • All the trips made in the urban area and the steps of each of them

13. “Follow-up calls”andcodification • Systematic follow-up calls are required to collect all travel data • To allow a precise codification, purposes and transport modes are very detailed : 34 purposes and 21 modes

14. A national database with reliable and comparable data • A hundred of surveys carried out in about 60 big towns (most of them around France) • About 15 medium size towns • A dozen of surveys carried out in large areas (urban + rural) • A national survey on the whole French territory (urban and rural areas)

15. A tool for transport planning policy • To implement transport policies made compulsory by law (Urban Local Travel Plans) • To give decision makers reliable data to make their decisions • To evaluate transport policies, measure their impacts • To compare transport policies in time and among urban areas, study the main trends • To build scenarios and forecast

16. Some mobility indicators • From 2 to 2,5 activities per person and per working day • From 3,5 to 4 trips per person and per working day • From 12 km to 16 km made in the urban area • Travel speed from 15 km/h to 20 km/h

17. Main trends of French mobility • A daily transport time rather stable (one hour) • The ratio “number of cars per person” is increasing • Rising distances travelled • Travel speed increases (cars) • Less walking and cycling, more car trips

18. More and more cars Number of cars per person

19. Car trips increase but has the trend changed recently ? Number of daily car trips per person

20. The other transport modes (= all except car) are decreasing Proportion of daily trips per person made with any transport modes except cars

21. Conclusion • An objective tool, accepted and acknowledged by everybody • A national database, useful to measure, evaluate, compare • A complex but rich tool, reliable and imitated by several other countries …