There’s a lot going on in the Washington region. Controversial Metro ads, new parking meters for people with disabilities, the looming threat of Cherry Blossom-related traffic and, of course, the final three hearings on Metro’s proposed fare increases.

This doesn’t even touch on the usual congestion and transportation headaches faced by commuters in this region. Do you have questions? Concerns? Confusion? Or are you annoyed about something and need a place to vent?

If so, chat with the doctor. Dr . Gridlock will be online for a live discussion with readers on Monday at noon. Head here to submit questions early. Head back here on Monday at noon for the chat. And if you can’t make it, a transcript will be available at the same link once the chat is over.

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