; (18) contain safe trails or routes, such as trails, bikeways, and sidewalks that connect to neighborhoods and enhance access to parks and recreational areas and facilities; and (19) update existing equipment or facilities or construct new facilities or sites, to comply with the most recent accessibility guidelines published by the United States Access Board, specifically by removing architectural barriers so that sites comply or exceed the requirements of the final guidelines for the accessibility of recreational areas and facilities. (b) Limitation on use of funds Not more than 10 percent of any amounts made available pursuant to section 114 for rehabilitation and construction grants under section 103(a)(1) in any fiscal year may be used for the acquisition of lands or interests in land. 105. Requirements for innovation and recreation program grants (a) Priority criteria The Secretary shall establish priority criteria for the selection and approval of projects and programs to be funded by an innovation and recreation program grant made pursuant to section 103(a)(2), including whether and the extent to which the project or program— (1) promotes the unique integration of recreation with other community services, such as transportation, public housing and public safety, either to expand or update current services or to link programs within the social service structure of a neighborhood or between neighborhoods; (2) utilizes new management and cost-saving or service-efficient approaches for improving the delivery of recreation services; (3) serves communities with a high population of active military families or veterans; (4) ensures accessibility to therapeutic recreation services and provides recreation opportunities for injured or disabled members of the Armed Forces; (5) employs veterans or youth, or uses youth volunteers; (6) enhances or expands youth development in neighborhoods and communities by engaging youth in environmental stewardship, conservation, and service projects