The Houston region has undergone an incredible demographic transformation over the past 20 years. It faces rapid growth through 2035, adding another 3.5 million residents to the eight-county region. Harris County is expected to add two million people– the equivalent of adding a second Houston to Harris County. More than 600,000 of these new residents will be within the city limits of Houston. With this tremendous growth, the Houston region will face many transportation challenges. Mobility has been consistently ranked as a top concern by residents of the Houston region.