The man, recognized as Floyd Roy Roseberry, 49, gave up about an hour after the danger was made.
US Capitol Police had been haggling with the driver who had left a get truck close to the Library of Congress, across the road from the Capitol building and Supreme Court.
His thought processes stay obscure. Police are as yet looking through the vehicle.
Congress is on break, yet some staff are working in the Capitol. A few places of business were emptied.
Recordings indicating to be the man livestreaming from the vehicle have been shared via online media.
The man left the vehicle on an asphalt and told an official who moved toward him that he had a bomb, while holding what had all the earmarks of being a detonator, Capitol Police Chief J Thomas Manger told a news gathering.
“My arbitrators are working diligently attempting to have a tranquil goal to this occurrence,” he said before the capture.
A few individuals from staff on Capitol Hill were initially advised to stay set up and cover in workplaces.