Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ Household travel surveys how to carry them out ? Method and a few results

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ « 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

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ Standardized and consistent travel surveys Local travel surveys in urban areas : big towns EMD large areas EDGT medium size townsEDVM and a National Transport SurveyENT

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ Ministry of transport involved in local travel surveys (1) 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)

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ 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

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ Certu builds a standardized method A guidebook has been published, sold on our website : All the material needed is on a Cd Rom joined to the guidebook (questionnaires, letters, list of controls required, etc.)

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ « 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

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ 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

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ 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

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ 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

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /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

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ 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

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ “Follow-up calls” and codification 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

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ 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)

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ 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

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ 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

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ 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 Main trends of French mobility

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ More and more cars Number of cars per person

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ Car trips increase but has the trend changed recently ? Number of daily car trips per person

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ The other transport modes (= all except car) are decreasing Proportion of daily trips per person made with any transport modes except cars

Marie-Odile GASCON, CertuSHANGHAI, Forum THNS, 11 – 14 Novembre /11/ 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 …