Greater Greater Washington founder (and fellow transportation nerd) David Alpert tells us about his website's MetroGreater contest. We answer hot questions from Metropocalypse listeners. And experts on the psychology of commuting explain how SafeTrack might affect Washingtonians' habits.

Episode 7.5: Live At Kramerbooks In D.C.

Explosions and smoke-filled tunnels. Frustrated riders and epic commutes. This is the new normal on Washington’s Metro. Metropocalypse, a weekly podcast from WAMU 88.5, explores the unprecedented plan to rebuild tracks and re-engineer culture on the nation’s second largest transit system. Send questions & ideas to metro@wamu.org.