The conditions imposed on the access to and use of TRAILS data are laid down in the general conditions (version January 2019; only in Dutch). These describe the procedure for requesting data, the demands placed on the manuscript, and the demands imposed on the use of the data.
To apply for TRAILS data by external users the form publication plan has to be completed. The conditions you will find in TRAILS general conditions data use for external users (version October 2015).
Codebooks are available from DANS EASY, the online archiving system for research data by the Netherlands Institute for Permanent Access to Digital Research Resources.