The contract for this project expired on April 8, 2025. The National Academies of Science Engineering and Medicine did not renew the subaward because the research objectives of this project did not align with the priorities of the Trump Administration. The research team submitted an Interim Report which was approved by the panel in December, 2024. The Transportation Research Board will not edit and publish any deliverables. The unedited Interim Report is posted here for archival purposes. The opinions and conclusions expressed or implied in the draft products are those of the research agency and are not necessarily those of the Transportation Research Board or its sponsoring agencies.