These articles [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24] were published as part of an upcoming guest-edited special issue titled 'Autonomous vehicles: model development, policy design and system optimization' in Personal and Ubiquitous Computing. Following the publication of the first articles, the Publisher became aware of serious research integrity concerns within the guest-edited issue. The peer review process was not carried out in accordance with the Publisher's peer review policy (see https://www.springer.com/gp/editorial-policies/peer-review-policy-process), and may have been deliberately manipulated. All articles in this guest-edited issue are currently being assessed. The Publisher will take further editorial action where appropriate, once this investigation is complete.

The authors were informed of the publication of this Editorial Expression of Concern using email addresses provided at submission.