METRO's popular I-45 North HOV pilot program is still on during summer weekends. The North Freeway HOV lane will continue to be open to inbound traffic only,on weekends though Sunday, Sept. 29, 2019.
Use of the lane is free during specified hours and no minimum number of occupants is required. Towed trailers and trucks over one-ton are prohibited from accessing the lane.
An interactive map with a list of I-45 North / North Freeway entrances can be found here.