Pleasanton Engineers Consulting 5960 Inglewood Dr # 100 TJKM is a traffic engineering and transportation planning firm serving Northern California, Central California and Nevada with offices in Pleasanton, Fresno, Sacramento, and Santa Rosa. Pleasanton CA Engineers Consulting TJKM Transportation Cnsltnt www.tjkm.com travel demand modeling transportation consultants traffic studies traffic impact study traffic impact studies traffic engineering TJKM signal timing signal design travel demand modeling transportation consultants traffic studies traffic impact study traffic impact studies traffic engineering TJKM signal timing signal design Business Reviews TJKM Transportation Cnsltnt Testimonials