This bill requires the Department of Transportation (DOT), at the request of a project sponsor, to provide an additional 30% of total projects costs for any project in the full funding grant agreement stage of the fixed guideway capital investment grant program. DOT must allow a project sponsor to defer payment of the non-federal share for projects that receive additionally funding in accordance with the bill. Additionally, the federal share payable of the costs of a project that receives additional funding may not exceed 80%.