Grantley Martelly has worked in the transportation industry for the last 28 years. He began his tenure in the environmental and chemical waste sector as an environmental field chemist. He then moved into the public transportation sector to address environmental challenges to improve workplace safety and to facilitate expansion of a rapidly growing system.

At King County Metro he serves as the managing director, Safety and Security, and is charged with improving the culture of safety within the organization, developing strategy and performance metrics using hazard analysis and data analytics to allow the organization to drive continuous safety and security improvements within the organization and to its community and customers.

Mr. Martelly has a masterís degree in transportation management from Denver University. He served as an adjunct faculty at the Salt Lake Community College, served on the Environmental Advisory Committee for the Community College, and taught at the Rocky Mountain Center for Occupational and Environmental Health. He has consulted on projects in the Caribbean, India and the United States.