The Hanoi People’s Committee has approved a 10-year contract allowing businesses to install over 250 billboards on the pillars of the Ring Road 2 elevated highway. In return, these companies are obligated to maintain cleanliness, construct bus shelters, and plant and care for trees and grass along the entire route, both above and below the highway, from Ngã Tư Sở to Vĩnh Tuy Bridge.