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Transport for Greater Manchester ["TfGM"] is committed to making sure that we tell you about the ways in which we use your personal information and that we have the right controls in place to make sure it is used responsibly and kept safe from inappropriate access, theft, or misuse.

This notice explains how we use your information and tells you about your privacy rights. For further information about our core data protection obligations and commitments, please see TfGM's primary Privacy Policy:

Summary of the Survey

The Greater Manchester Travel Diary Survey (TRADS) is an annual survey commissioned by Transport for Greater Manchester (TfGM). It collects information on how people travel in Greater Manchester today and covers walking and cycling as well as journeys made by public transport, cars, vans and motorbikes. TRADS will be carried out every year with 2,000 randomly selected households across Greater Manchester, who will be invited to take part by an interviewer visiting their home, or via a letter in the post.

The surveys help to plan improvements to roads and public transport, to reduce overcrowding and congestion, improve road safety and enhance the environment. The survey results are also used by transport planners to forecast the number of people using public transport services, to plan services, to make provision for pedestrians and cyclists and to inform future transport developments. To support with this, we need to know how travel behaviour is altering in response to changes in patterns of employment, land-use, population, household income and investment in transport infrastructure.

The survey is being carried out on behalf of TfGM by AECOM, under the Market Research Society Code of Conduct.

TfGM is the Data Controller for personal information collected in the survey. We have commissioned the research and determined what information should be collected. AECOM are our Data Processor. This means that they are responsible for collecting and processing your personal data on our behalf.

AECOM are the Data Controller for any contact details collected to administer the prize draw or for back-checking purposes.

What information we collect from you

Participation in this research is entirely voluntary and you are free to decide not to take part if you do not want to. If you do take part, each household is asked questions about:

  • The number of people in the household
  • The trips you make during a 24-hour period
  • Your use of cars and other types of private transport
  • Your travel by public transport
  • Walking and cycling
  • Factors affecting your travel (for example, whether you have any disabilities or health problems affecting your mobility.)

We also ask questions in the survey to capture personal data including demographic information. Most of these questions are optional and include:

  • Names and titles
  • Age
  • Gender
  • Household Income
  • Home address
  • Employment details
  • Education details
  • Business contact information / work related information
  • Financial information
  • Location information / geocode

We ask for the following special categories of personal information. These are also optional:

  • Racial or ethnic origin
  • Health
  • Sexual orientation
  • Religious or philosophical beliefs

In addition to the survey, AECOM will also ask for your phone number and/or email address to administer the prize draw and for back-checking purposes. TfGM will only receive these if you agree to be contacted about future research opportunities.

Sources of personal data other than the data subject

As well as information collected directly from you, we also collect or receive information from:

  • CACI provide TfGM with a postcode level classification of sociodemographic profile data. However, this is reported at an aggregate Lower Super Output Area (LSOA) level. See CACI’s privacy notice for more details.
  • ONS data

Our lawful basis under UK GDPR

The legal basis we rely on for processing your personal information is:

  • Article 6 1(e): the processing is necessary for the performance of a task carried out in the public interest or in the exercise of official authority vested in the controller.

The legal basis we rely on for processing your special category personal information is:

  • Article 9 2(g): the processing is necessary for reasons of substantial public interest, in ensuring equality of opportunity or treatment.
  • Article 9 2(j): the processing is necessary for archiving purposes in the public interest, scientific or historical research purposes or statistical purposes.

How information is collected

We can only speak to a small number of households from across Greater Manchester. Therefore, households are chosen at random and invited to take part.

Participation is voluntary, with households agreeing to take part by following the instructions on their introductory letter. Interviews take place face-to-face or remotely via telephone. An interviewer from AECOM will call to arrange a convenient time to visit or call when everyone is at home.

The survey is carried out on behalf of TfGM by AECOM under the Market Research Society Code of Conduct. Any information you and other members of your household provide will be stored securely and handled in compliance with Data Protection Legislation such at the UK General Data Protection Regulation (UK GDPR).

Data sharing

We may share some data collected in the study with researchers from other organisations, such as those listed below. This will not include any information which directly identifies you. In most instances this will be sharing of anonymous aggregated data in reports. We will only share pseudonymised personal data where it is appropriate to do so, for research purposes only and in compliance with data protection legislation.

  • Suppliers (to deliver services on our behalf);
  • Local Authorities;
  • Greater Manchester Combined Authority;
  • Central Government (eg the Department for Transport or the House of Commons);
  • Schools;
  • Urban Transport Group Members;
  • Universities;
  • Voluntary Sector Organisations; and
  • Private Companies.

Data transfers

All data collected by TfGM and AECOM will be stored securely in the United Kingdom.

Data retention

We will delete data which directly identifies you (Name, Address, Contact Details) once all validation and back-checking is complete*. Usually this is within six months of the survey year finishing. The remaining survey response data, including the demographic and special category data listed in section 3, is kept for no longer than is necessary for the research purposes. Personal data held is kept under review and deleted when no longer required.

*If you agree to be contacted about future research opportunities, TfGM will retain your contact details for two years.

Rights of individuals

TfGM must comply with the UK General Data Protection Regulations (UK GDPR) and the Data Protection Act 2018.

Under data protection law, your rights include:

  • Your right of access - You have the right to ask us for copies of your personal information.
  • Your right to rectification - You have the right to ask us to rectify information you think is inaccurate. You also have the right to ask us to complete information you think is incomplete.
  • Your right to erasure - You have the right to ask us to erase your personal information in certain circumstances.
  • Your right to restriction of processing - You have the right to ask us to restrict the processing of your information in certain circumstances.
  • Your right to object to processing - You have the right to object to the processing of your personal data in certain circumstances.
  • Your right to data portability - You have the right to ask that we transfer the information you gave us to another organisation, or to you, in certain circumstances.

You are not required to pay any charge for exercising your rights. If you make a request, we have one month to respond to you.

If you wish to make a request, please contact us at:

Should you wish to find out more about AECOM's data protection processes, please see their Privacy Policy:

How can I make a complaint?

If you are not satisfied with how TfGM is using the information we hold about you, please contact our Data Protection Officer by emailing:

If you are still not satisfied with TfGM's response to any request to exercise your individual rights or if you believe that TfGM is not processing your personal data in accordance with the law, you can contact the Information Commissioners' Office:

Post: Information Commissioner's Office, Wycliffe House, Water Lane, Wilmslow, SK9 5AF.
Telephone: 0303 123 1113.


We may update or revise this Privacy Notice from time to time and provide supplementary privacy information as is necessary.

Last updated: 19 May 2023