Transportation Lecture Part 1 | Diana Gragg | Stanford Understand Energy

Transportation Part 1: historical highlights; significance; passenger and freight modes; world and U.S. vehicle fleets; externalities; air pollution regulation; fuel policies; biofuels. Visit the Transportation page on our Learning Hub for more content: https://understand-energy.stanford.ed... Recorded on: November 19, 2025 Presented by: Diana Gragg, Core Lecturer, Civil and Environmental Engineering; Explore Energy Managing Director, Precourt Institute for Energy, Stanford University. Learn more about Diana Gragg: -   • Diana Gragg Introduction   -https://dianagragg.sites.stanford.edu/ Sign up for our free monthly newsletter to learn about all things energy: https://understand-energy.stanford.ed... 00:00 Introduction 05:22 Historical highlights 09:02 Significance 12:41 Freight Transport 15:37 Personal Transport 16:54 World and U.S. Fleet 18:15 Externalities & Policy 26:27 Air Pollution Regulation 35:12 Fuel Policies 44:16 Biofuels The mission of Understand Energy is to help people build their energy literacy so they can address climate change and sustainability issues, engage on equity and human development challenges, participate in energy industry markets and technology innovations, and make informed energy decisions. The Learning Hub shares content from the Understand Energy course with people across the globe—for free—in an easy-to-navigate format that allows users to explore the energy subject areas that most interest them. Each of our 30+ topics offers a variety of content including a Fast Facts summary of key information, the related Stanford course lecture, and a highly curated list of third-party videos and readings. We keep the content fresh and current with updates every 6-12 months.