The Manual on Uniform Traffic Control Devices (MUTCD) from the Federal Highway Administration (FHWA) has been around for nearly 100 years, and is the federal standard for regulation of all things signs, markings, and signals in the US transportation system. But how has the manual changed throughout the years, and how has ITE played a role in influencing those changes? ITE Deputy Executive Director and Chief Technical Officer Jeff Lindley joins the podcast to demystify these issues. He also describes ITE's response to the current Notice of Proposed Amendments issued by FHWA, which is expected to result in a new edition of the manual, the first to be issued since 2009.