2023 YPT International Board of Advisors Spotlight: Sally Librera

Senior Vice President,Transit Market Sector LeaderAECOM Sally is AECOM’s Transit Market Leader for the Americas. She focuses on designing and delivering sustainable, innovative, and cost-effective transit solutions. Sally has extensive experience in successfully leading large, complex transit operations through system modernization, with a strong focus on improving system performance and customer service; growing transit ridership; [...]

2023 YPT International Board of Advisors Spotlight: Christof Spieler

Vice President, Director of PlanningHuitt-Zollars Christof Spieler, PE, AICP, LEED AP is Director of Planning at Huitt-Zollars. His recent work includes transit planning in Philadelphia, Boston, Fort Worth, and the Twin Cities, a community vision for Galveston, greenways in Houston, street design manuals for Dallas, and the City of Houston’s response to a proposed highway [...]

2023 YPT International Board of Advisors Spotlight: Sam Zimbabwe

Practice BuilderKimley-Horn Sam’s career spans more than 20 years of experience in the public, private, and non-profit sectors. Throughout his career, he has focused on the strategic connection between transportation investments and achieving community and economic development goals. Sam joined Kimley-Horn in March 2022 and is currently working with cities and transit agencies across the [...]

2023 YPT International Board of Advisors Spotlight: Allie Isbell

Assistant Director of TransportationHouston-Galveston Area Council (H-GAC) Allie Isbell, AICP, is an Assistant Director in the Transportation Department of the Houston-Galveston Area Council. In this role, Ms. Isbell’s responsibilities include coordination among program areas, including regional planning, project programming and delivery, safety, travel demand management, and air quality. Allie is a transportation planner with experience in [...]