Founder & Executive Director

Leah is the Founder and Director of the Vision Zero Network, bringing two decades of proven success championing movements to advance safe, healthy, active transportation. She serves on the Steering Group of the national Road to Zero Coalition, as well as the Advisory Board of the Collaborative Sciences Center for Road Safety (CSCRS) at the University of North Carolina.

As a German Marshall Fund Fellow, Leah researched Vision Zero strategies in Sweden, Germany and the Netherlands. Prior to that, Leah served as the Executive Director of the San Francisco Bicycle Coalition, leading significant change on the streets and in the policies of this leading Vision Zero city. She also served as a policy maker on the Boards of Directors of the Golden Gate Bridge, Highway & Transportation District and the SF Municipal Transportation Agency, as well as the national Alliance for Biking and Walking.

Jenn Fox


Program Director

Jenn is a non-profit professional who applies her science expertise to improve public policy. She is the former Executive Director of the Bay Area Space Open Council, a network of 65+ nonprofit and public agencies serving tens of millions of Bay Area residents through the trail maintenance and stewardship of 1 million acres of publicly accessible park lands. Over the last 20 years, Jenn has worked internationally as a Director at the ClimateWorks Foundation, and locally, writing the first greenhouse gas emissions reduction plan for the City of Oakland.




Bob Dallas is a civil lawyer with extensive experience in developing and implementing public health and safety behavioral programs. In 1989 Bob co-founded Safe Kids of Georgia and has spent 25+ years working on public health and transportation safety initiatives, 20 years as a planning commissioner, and 8 years as Georgia’s highway safety director. Bob currently chairs Pedestrians Educating Drivers on Safety (PEDS) and was appointed by DeKalb County to serve on the Metropolitan Atlanta Rapid Transit Authority board. He also serves on the Road Safe America, Cowart Family Ashford-Dunwoody YMCA, and Dunwoody Planning Commission boards. Bob now works with DEKRA North America to develop and implement Vision Zero policies.



Nicole Ferrara is Chair of the Vision Zero Network's Advisory Committee. She is a leader in the City of Oakland Department of Transportation's Great Streets Division and the manager of Oakland's Vision Zero initiative. Prior to Oakland, Nicole was the executive director of Walk San Francisco, the city's pedestrian advocacy organization working to reclaim San Francisco’s streets as safe, shared public spaces for everybody to enjoy. Nicole has served on the Caltrans District 4 Pedestrian Advisory Committee, the City of Berkeley Transportation Commission, and the board of the Alliance for Biking and Walking.



Niko Letunic is a principal at Eisen | Letunic, a transportation, land use and environmental planning firm based in the S.F. Bay Area. Niko has almost 25 years of professional planning experience in the public, private and non-profit sectors. A long-time resident of San Francisco, Niko was born in Ecuador and raised in Colombia. He was the founding board president of the San Francisco Bicycle Coalition, has served on the Citizens' Advisory Committee of the San Francisco County Transportation Authority and is currently on the board of directors of Walk San Francisco, a pedestrian advocacy organization.

Juan Martinez.photo


In his current role as Senior Advisor for State Legislative Affairs, Juan Martinez lobbies to advance the City of New York's transportation and infrastructure policies, including successful campaigns to expand automated enforcement and win adoption of congestion pricing. Previously, Juan served as the Director of Traffic Operations Policy at the NYC Department of Transportation, where he led policy development  for several of the agency’s Vision Zero efforts, including the  expansion of pedestrian right of way within crosswalks. Previously, Juan was General Counsel & Legislative Director at Transportation Alternatives, one of the nation’s leading walking and bicycling nonprofits, where he led the campaign to commence NYC's speed camera program and helped lead the campaign which led to the adoption of Vision Zero in NYC.



Martha Roskowski is Vice President of Local Innovation for the national non-profit PeopleForBikes. She runs the Green Lane Project to get better bike lanes on the ground in U.S. cities. Previously, she led the City of Boulder’s innovative transportation planning, policy and program efforts. She ran the America Bikes campaign on the federal transportation bill which created the Safe Routes to School Program and launched the Complete Streets movement. She also spent seven years as the Executive Director of statewide advocacy group Bicycle Colorado.

Destiny Thomas


Dr. Destiny Thomas is the is the Chief Executive Officer at Thrivance Project. A Cultural Anthropologist from Oakland, CA with a community-organizing and Environmental Planning background, she takes a multi-sector approach to elevating the human element and lived experiences in the realms of planning, public health, and environmental justice. Dr. Thomas developed a model for Dignity Infused Community Engagement while working with the Vision Zero Policy and Programs division at the Los Angeles Department of Transportation.