Barbara J. Mosier | Wells + Associates

Barbara J. Mosier

barbara mosier traffic engineer wells + associates

Barbara Mosier is a traffic engineer with more than a decade of experience performing traffic impact studies and analyses for highway and roadway improvement projects and transit and pedestrian access evaluations for new developments, including residential, office, retail, mixed-use, healthcare, institutional, and educational uses.

She supervises traffic engineering teams that conduct traffic impact analyses, cost-benefit calculations, analysis of site plan approvals, studies based on the Manual on Uniform Traffic Control Devices, intersection improvement studies, Local Area Transportation Review analyses, and production of technical reports and memos, among other services.

Barbara has deep experience working on projects in the Washington, DC region and in Maryland, including Montgomery and Prince George’s Counties and in the Baltimore area. To satisfy project requirements and objectives, her work regularly involves representing clients before state, county, and local agencies and stakeholders such as the City of Baltimore Department of Transportation, the Montgomery County Planning Department and Department of Transportation, the District Department of Transportation, Maryland-National Capital Park and Planning Commission, the National Capital Planning Commission, the Maryland Transportation Authority, and the Anne Arundel County Department of Public Works.

Barbara is the scholarship chair for the Baltimore chapter of Women’s Transportation Seminar (WTS). WTS is an international organization dedicated to building the future of transportation through the global advancement of women.


What made you interested in transportation?
I wanted to be a civil engineer since high school, but I started off thinking I wanted to go into Geotechnical. I swiftly learned how wrong I was. Transportation fell in my lap when I took a traffic engineering course on a whim and was fascinated by a Synchro model our professor showed us of the Liberty Tunnel southern interchange in Pittsburgh. It was like a logic puzzle to work out how you could possible fix that spaghetti mess. I was fascinated, and that fascination with the puzzles of transportation hasn’t gone away.
Plane, train, car, or bike?
TRAIN. I love trains. The tracks run just outside my office window here in Silver Spring, and I love hearing the sound all day in the background.
What is your favorite vacation spot?
I’m not picky as long as there’s water.
What was the make and model of your first car?
Family heirloom ’84 Chevy Cavalier, but only for a few months. Got an “upgrade” to an ’88 Ford Tempo when my mechanic said the Cavalier was so broken he couldn’t fix it. Direct quote: “Look, there’s not even anything I can find wrong. It’s just dying of old age.”
Who is your favorite sports team?
What is your Starbucks order?
I’m a sucker for the Gingerbread Latte. It’s the best part of winter.


  • Bachelor of Science, Civil Engineering/ Engineering and Public Policy; Carnegie Mellon University

Professional Certifications

  • Professional Engineer (P.E.): Maryland