; and (2) real-time data measurement technology. (d) Timing A grant awarded to an entity under the Program shall be fully expended not later than the date that is 3 years after the date on which initial grant amounts are made available to the entity. (e) Federal share (1) In general Except as provided in paragraph (2), the Federal share of the costs of a project assisted with a grant under the Program may not exceed 80 percent. (2) Exception The Secretary may waive paragraph (1) if a State, local, or Tribal government entity demonstrates, as determined by the Secretary, extreme financial hardship. (3) In-kind contributions The non-Federal share of the costs of a project assisted with a grant under the Program may be derived in whole or in part from in-kind contributions. (f) Applications To be eligible for a grant under the Program a State, local, or Tribal government entity shall submit to the Secretary an application at such time, in such form, and containing such information as the Secretary determines appropriate. (g) Prohibition (1) In general A grant awarded under the Program may not be used to purchase, operate, or maintain an automated traffic enforcement system. (2) Automated traffic enforcement system defined In this subsection, the term automated traffic enforcement system means any device that captures an image of or information from a vehicle for the purposes of traffic law enforcement.