The Washington area has notoriously bad traffic. This can be jarring for newcomers, who often spend their first weeks and months just dealing with one particularly bad traffic jam on the Beltway.

That’s where Dr. Gridlock comes in. The good doctor (a.k.a. Robert Thomson) has assembled a guide for newbies in an effort to help them navigate the region’s roads and transit routes. You can read his story here. We’ve also created an interactive map so you newcomers can see for yourselves just where these nightmarish traffic jams are located.

Do you see any particularly bad spots we didn’t highlight? Share them in the comments section below.

What do you think is worse — driving or riding the Metro? Sound off in our reader poll.

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