Dr. Gridlock answers your questions

Dr. Gridlock was online chatting with travelers on Monday afternoon. He answered questions about the Mark Center, road tripping and slower drivers keeping to the right. Head over there to take a look at the transcript. Make sure to check back here later on because the good doctor will be answering some questions left over from the chat in this space.

Mark Berman is a reporter on the National staff. He runs Post Nation, a destination for breaking news and developing stories from around the country.
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