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Chat with Dr. Gridlock today

Questions about your commute? It doesn’t matter if you drive, take the Metro, bike or walk. Bring any questions, queries and concerns to the doctor. Dr. Gridlock will be answering questions from readers today at noon. Head here to submit questions ahead of time and head back there at noon for the discussion.

Mark Berman covers national news for The Washington Post and anchors Post Nation, a destination for breaking news and stories from around the country.
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