Mr. Jordan earned a master's in energy management and policy in 1982 from Penn's Wharton School. He also studied religious thought. His first name, Gihon, came from the Old Testament: "I'm on Page 2 of Genesis; Adam and Eve are on Page 3," he noted in 1994. He was a Quaker who called himself "an ethicist."
Raised in Edison, N.J., Mr. Jordan was the grandson of a civil engineer and Penn professor who led the construction of U.S. Route 2 in Montana.
In Philadelphia, Mr. Jordan pushed for more stop signs and fewer stop lights,
which he wanted converted into energy-efficient LED lights; better pedestrian signage; and safe, paved shoulders.
"One of his most cherished accomplishments was helping start the Warrington Community Garden in West Philadelphia," said his wife of three years, Susan Edens. She is a cultural landscape architect at Independence National Historical Park and shares her husband's passion for improving the world.
"Gihon knew the dangers and joys of riding a bike in the city. He was a safe biker, always wore a helmet. He had a road bicycle which he kept in good repair," she said. "He rode in the rain and at night."
After five years with New Jersey Department of Transportation as a specialist in air quality, bicycles and transportation, Mr. Jordan came to Philadelphia to work for the Planning Commission, where he studied the demographics of North Philadelphia until 1989. He was named project and traffic engineer by the Streets Department, where he worked until 1993. For 12 years, he was the Streets Department's Center City district traffic engineer. He retired in 2005.
In addition to his wife, Mr. Jordan is survived by a brother, Paul; sisters Patricia Williams and Joan; and several nieces and nephews.
A memorial service is being planned for September. Donations may be made to the Gihon Jordan Scholarship Fund, Association of Pedestrian and Bicycle Professionals, Box 93, Cedarburg, Wis., 53012.
Sims, Gayle Ronan. “Gihon Jordan, 58, traffic engineer.” The Philadelphia Inquirer 12 August2008. <http://www.philly.com/inquirer/obituaries/