Versions of the UTD are often hosted on platforms like Kaggle or GitHub under urban mobility research projects.
This indicates the third minor update or iteration released in 2021. Download File UTD21.3.zip
Could you clarify if you are having the zip file or if you need a specific citation for a research project? Versions of the UTD are often hosted on
(or similar variations depending on the specific year of release). Key Information Regarding the File you can typically find it on:
If you are looking for the technical documentation or the official paper to cite, you can typically find it on: