(a) In General.—
(b) Priority Areas.—Under the program, the Secretary shall give higher priority to funding projects that—
use interdisciplinary approaches to develop traffic management strategies and tools to address multiple impacts of congestion concurrently;
incorporate research on the potential impact of environmental, weather, and natural conditions on intelligent transportation systems, including the effects of cold climates;
enhance intermodal use of intelligent transportation systems for diverse groups, including for emergency and health-related services;
(c) Federal Share.—
The Federal share payable on account of any project or activity carried out under subsection (a) shall not exceed 80 percent.