Washington’s transportation leaders are preparing to unveil a system that would give Virginia, the District of Columbia, Maryland and Metro unprecedented access to each other’s traffic and transit information, revolutionizing how the region communicates and responds to major disruptions.

“Almost every week we have new reminders that the region needs a more coordinated transportation response and public communication capability,” said David Snyder, vice chairman of the Metropolitan Washington Council of Governments Transportation Planning Board, which is developing the new system.