Rodney Diridon Sr., the visionary 'father of modern transit' in Silicon Valley whose name graces San Jose’s central rail hub, died on April 3, 2026, at the age of 87. He was the primary architect of the region's light rail and high-speed rail systems, transforming a suburban landscape into a connected metropolitan corridor. He died at a Santa Clara County hospital due to sepsis following radiation treatment, according to The Mercury News.

The defining moment of his political career arrived during the 1976 campaign for a half-cent sales tax for a transit district in California. Chaired by Diridon, this landmark victory convinced a car-centric region to invest heavily in its future. The legislative tenacity he displayed during the campaign bridged his blue-collar roots with his vision for a modern metropolis.

This relentless drive was forged years earlier on the tracks of the Southern Pacific Railroad. Born in Yreka to Claude Diridon, an Italian immigrant railroad brakeman, and Rhoda Covert, a musician and activist, the younger Diridon worked as a brakeman and fireman to pay his way through college. He graduated from San Jose State University with a bachelor of science in accounting and finance in 1961 and a master of science in business administration in statistics in 1963. He later served as a Naval Officer, completing two combat tours in Vietnam as an antisubmarine warfare and weapons officer on destroyers.

His public service began as the youngest member of the Saratoga City Council, where he also served as vice mayor. He then spent 20 years on the Santa Clara County Board of Supervisors, including six terms as chair. He became the only person to chair all three regional San Francisco Bay Area governments: the Metropolitan Transportation Commission, the Bay Area Air Quality Management District, and the Association of Bay Area Governments.

Diridon chaired nine successful rail system development project boards, including the Guadalupe Corridor Light Rail and Caltrain. Governor Gray Davis appointed him to the California High-Speed Rail Authority, where he later served as chairman. He also served as the Executive Director of the Mineta Transportation Institute from 1993 to 2014 and founded the California Trolley and Railroad Corporation to preserve historic transit vehicles in the Santa Clara Valley. In 2001, he married Dr. Gloria Duffy, president of the Commonwealth Club of California.

"He was one of a kind. He was more committed to transportation, probably than anyone I've ever known," noted former Santa Clara County Supervisor Liz Kniss. California State Senator Dave Cortese observed his refusal to slow down even in his final days, telling the San Francisco Chronicle, "Short of a terminal illness, he would not have slowed down for anything." Upon his retirement from the Board of Supervisors, the main passenger rail depot in San Jose was renamed in his honor.

San Jose Diridon Station became not merely a building of brick and steel, but a living legacy of transit equity and environmental stewardship. Every departing train echoed the vision of a young railroad fireman who dedicated his life to keeping his community moving forward.