Ever since cars became the most dominant form of transportation in the world, cities have been transformed drastically to accommodate travel demands. Since then, the demand for additional vehicular capacity has been increasing steadily. However, since 2005, demand has been decreasing. This has baffled engineers, who have had to focus on more sustainable solutions. Ricky Angueria, a graduate student from Puerto Rico, will discuss changes in the design of cities to accommodate the demand for more environmentally friendly routes of transportation.