Survey on Residents’ Mobility in Spain, 2006-7

Summary

The main objective of MOVILIA is to obtain information on mobility patterns of the population in Spain residing in family dwellings. Their characteristics and their determinants are the basis for conducting research on transport models that contribute to the infrastructure planning. The first stage is dedicated to the study of daily mobility, done for any reason on any given day (weekday and weekend), of "obliged mobility", to the workplace and educational centres, and the reasons for the lack of mobility. The second phase was planned to study long-distance mobility, which involves an overnight stay at a location other than the residence. This survey does not include some of the population that lives in family housing, such as those people who are residents in collective accommodations, tourists and the people who have not legalized their residence in Spain, mainly migrants. So, these groups have their own mobility patterns and, especially in certain zones, have a substantial impact on the transportation modes.

Type of data

Data Source
Survey

Type of Study
Crosssection occasional

Data gathering method
Telephone
Face-to-face

Access to data

Conditions of access
Selected microdata are available for specific requests, which can be made by completing a form. Methodological information is only available in Spanish (http://www.fomento.gob.es/NR/rdonlyres/F49958E0-32B9-4DC0-8104-12B8195C7211/112453/MetMovilia20062007.pdf). Defined tables (near 170) for daily mobility can be accessed, separately or as a customized Excel file in Spanish (http://www.fomento.gob.es/BE2/?nivel=2&orden=26000000), and for long-distance mobility (more than 130 tables or customized files) (http://www.fomento.gob.es/BE2/?nivel=2&orden=26000000). For the 2000-2001 survey, some information is accessible online (http://www.fomento.gob.es/MFOM/LANG_CASTELLANO/ESTADISTICAS_Y_PUBLICACIONES/INFORMACION_ESTADISTICA/Movilidad/Movilia2000_2001/default.htm).

Type of available data (e.g. anonymised microdata, aggregated tables, etc.)
A report on the Survey was published to offer a wide set of tables (movements and travel, classified according the more significant features of interviewees). It can be accessed in Spanish at http://www.fomento.gob.es/NR/rdonlyres/2D1D40A2-3417-4C74-AF3F-D22D3A161F96/110679/Movilia20062007.pdf

Formats available
Tables are composed in Excel

Coverage

Coverage Years of collection, reference years, and sample sizes
Wave 1: Data collected in 2006. It was focused on daily mobility and was collected from October to December 2006. The sample consisted of 49,000 dwellings and 230,000 movements. Wave 2: Data collected in 2007. It was focused on long-distance mobility and was collected from February 2007 to January 2008. The sample consisted of 56,000 interviews and 35,000 trips. The survey is a multi-stage, stratified sample (census tracts, dwellings and one person).

First year of collection
2000-2001

Stratification if applicable
Census tracts, dwellings and one person from each dwelling

Base used for sampling

Geographical coverage and breakdowns
All of Spain

Age range
All residents living in family dwellings, Spanish and foreigners.

Statistical representativeness
Regional representative, please specify

Coverage of main and cross-cutting topics
For data collection on housing and mobility in working days, the time reference is the day prior to the interview. For mobility on the weekend, the reference days are Saturday or Sunday, chosen at random, immediately preceding the day of the interview. In the second phase, the reference is the month prior to celebration of the interview. Two types of questionnaires were composed for the first stage: one is for the general housing characteristics, people and vehicles, and another is specifically designed for the description of commuting (for weekdays and for weekend). In the second stage, the main dwelling and interviewees features are collected using CATI (origin and destination, transportation modes and duration).

Linkage

Standardisation
No

Possibility of linkage among databases
No

Data quality

Entry errors if applicable
Sampling errors can be considered low, in spite of the fact that non-sampling errors mainly come from the lack of sample representativeness motivated by the various incidents in the fieldwork produced in both phases of the survey. Questionnaires in the first stage were put through a process of statistical debugging to check a set of consistency rules, validity and completeness. In the second stage, the interviews had incorporated some validation checks that facilitated simultaneous correction of errors. After codified, quality controls to analyze travel inconsistencies were carried out.

Breaks
The two issues were raised with the same methodological framework, but a few differences must be highlighted: In 2006-7, only one person with no restriction an age in each housing unit was interviewed in order to gain data quality (in 2000, up to 4 people over 15 years old), the number of questions were reduced to gain more efficiency on answers, less than 5 minute walking movements were not registered (in 2000, movements less than 10 minutes), and all long-distance movements (over 50 km) are now covered (in 2000. over 100 km).

Consistency of terminology or coding used during collection
In spite of having some methodological changes between the two waves (2000-01 and 2006-07), this survey has improved some aspects such as, in regards to mobility data, the provincial representativeness (vs. regional), the removal of some question to gain efficiency, only interviewing one person in each dwelling, and short movements (less than five minutes) are discharged. All these changes are oriented to broaden the scope of study of mobility in Spain.

Governance

Contact information
Sub-Directorate on Economic Studies and Statistics
Ministry of Public Works
Paseo de la Castellana, 67
28071 Madrid Spain Phone: 91 597 79 31
Email: jmropero(at)fomento.es
Url: http://www.fomento.gob.es/MFOM/LANG_CASTELLANO/ESTADISTICAS_Y_PUBLICACIONES/INFORMACION_ESTADISTICA/Movilidad/Movilia2006_2007/default.htm

Timeliness, transparency
Approximately nine months