This notice details the application requirements and procedures to obtain funding for the installation of Positive Train Control (PTC) systems required under the Railroad Safety Improvement Act of 2008, as amended by the Positive Train Control Enforcement and Implementation Act of 2015. The opportunities described in this notice are available under Catalog of Federal Domestic Assistance number 20.321, ``Positive Train Control.'' FRA will review applications for funding under this NOFO and will select the projects for funding. FTA will award the grant funds and administer and manage the grants after award. FRA will help FTA monitor the PTC implementation and progress of the grantees. In addition, applicants should contact FRA with PTC technical questions.