Passengers radio documentary

Passengers is a radio documentary that a public radio project called Humankind put out in 2011. It's a well-produced and ambitious two-hour program covering many different aspects of and issues related to travel in metropolitan areas. It includes a diverse group of interviewees - transit advocates, transportation officials, transportation researchers, and riders. It's definitely worth a listen for people who just want to learn more about transportation as well as those immersed in the world of transportation as students, practitioners, and scholars.