The country’s largest transit agency is withdrawing from the country’s main transit trade association.

The National Transit Database shows that the D.C. rail system is firmly in the middle of the pack in capital investment terms, not far behind the New York City subway in capital spending per track-mile over the last five years.

Congress recently ended a longstanding imbalance in the federal tax code that favored car commuting over transit.

Successful campaigns to improve transit – and urban mobility more generally – depend on key contributions from community advocates, city...