; and (C) vehicle miles-traveled; (7) methods and best practices for aligning multimodal infrastructure improvements with multimodal freight transportation demand, including improvements to the National Multimodal Freight Network under section 70103; and (8) other research areas to identify and address current, emerging, and future needs related to multimodal freight transportation. (f) Funding (1) Federal share The Federal share of the cost of an activity carried out under this section shall be 100 percent. (2) Period of availability Amounts made available to carry out this section shall remain available until expended. (g) Definition of greenhouse gas In this section, the term greenhouse gas has the meaning given such term in section 211(o)(1) of the Clean Air Act ( 42 U.S.C. 7545(o)(1) ). . (b) Clerical amendment The analysis for chapter 702 of title 49, United States Code, is amended by adding at the end the following new item: 70205. National cooperative multimodal freight transportation research program. . 5107. Wildlife-vehicle collision reduction and habitat connectivity improvement (a) Study (1) In general The Secretary of Transportation shall conduct a study examining methods to reduce collisions between motorists and wildlife (referred to in this section as wildlife-vehicle collisions ). (2) Contents (A) Areas of study The study required under paragraph (1) shall— (i) update and expand on, as appropriate— (I) the report titled Wildlife Vehicle Collision Reduction Study: 2008 Report to Congress : and (II) the document titled Wildlife Vehicle Collision Reduction Study: Best Practices Manual and dated October 2008; and (ii) include— (I) an assessment, as of the date of the study, of— (aa) the causes of wildlife-vehicle collisions; (bb) the impact of wildlife-vehicle collisions on motorists and wildlife; and (cc) the impacts of roads and traffic on habitat connectivity for terrestrial and aquatic species; and (II) solutions and best practices for— (aa) reducing wildlife-vehicle collisions