Selected papers from the International Conference on Transportation and Development 2025, held in Glendale, Arizona, June 8–11, 2025. Sponsored by the Arizona Department of Transportation and the Transportation & Development Institute of ASCE.

This collection contains 91 peer-reviewed papers on transportation planning and operations.

Topics include: transportation planning; sustainable transportation; active transportation; street and highway operations; infrastructure systems; transportation economics and finance; public transport; rail transport; social equity and ethics; and workforce development.

This collection combines academic and industry expertise about smart transportation that will be useful for academic researchers, policymakers, and practitioners within transportation engineering.