A form of research in which we collect data is online surveys. In these, the introduction always briefly states how data and personal data are handled, and a link to this more extensive description.

The starting points are:

• We only use the data/results for what it is intended for (and what the participants also have an interest in); research into travel behaviour, exercise behaviour, spatial experience, experiences and opinions.

• We always use the minimum possible collection of personal data, in most cases no personal data at all (“any information relating to an identified or identifiable natural person (“data subject”); an identifiable natural person is one who can be identified, directly or indirectly, in particular by reference to an identifier such as a name, an identification number, location data, an online identifier or to one or more factors specific to the physical, physiological, genetic, mental, economic, cultural or social identity of that natural person”).

• We therefore do not collect any data that can be traced back to an individual person: no exact residential address, no name and no IP address.

• We may ask for the postal code of the home address, but never a house number. If sufficient for the purpose of the research, we only ask for 'postal code-4'. For some research, 'postal code-6' is relevant, for example if it concerns a study of travel behaviour on a local scale.

• In some surveys we ask for an email address from participants if they want to be kept informed of the results after completion of the survey. We only share these email addresses with the person conducting the survey, at the conducting organization, at the moment these participants are actually going to be informed.

• Raw survey data is only shared with implementing organizations. Email addresses are removed from this data unless the above applies.

• The survey results that we publish show the general results in a map, graph, diagram or 'word cloud'. Quotes from participants about their experiences or wishes can be shared in these research results to increase the empathy with the general results. If a quote contains information that could lead to the derivation of an individual person, we do not share this in the results/publication.

• Raw survey data will be deleted within twelve months of completion of the survey.