American Planning Association

Episode sponsor: Eastern Washington University Episode URL: https://planning.org/podcast/critical-conversations-in-transportation-planning-wes-marshall-and-trung-vo-aicp/ In this episode, co-hosts Divya Gandhi and Em Hall were excited to take the podcast show on the road, recording episodes at the 2025 National Planning Conference in Denver. This dispatch of Critical Conversation in Transportation Planning kicks off our safety series and features Wes Marshall, PhD, PE, a professor of civil engineering at the University of Colorado Denver, and Trung Vo, AICP, PE, Denver Office Director, Senior Planner, and Owner at Toole Design. Our speakers highlight how many traffic engineering standards are based on flawed assumptions rather than science, specifically pointing to problems with level of service metrics, automatic traffic growth assumptions, and designing for peak hours rather than community needs. They emphasize the need for courage to tackle arterial roads where most fatalities occur, challenging the rea