Preserving Lake Tahoe’s clear, blue water depends in large part on reducing vehicle travel. The basin, however, lacks reliable and efficient transit for residents, tourists, and commerce, and a funding source to fix it, say experts who testified Friday before the Nevada Legislative Committee for Review and Oversight of the Lake Tahoe Regional Planning Agency. … Vehicles emissions, microplastics from tires, and dust from trucks and autos are among the factors preventing Tahoe from reaching a visibility goal of 97 feet deep. In 2024, average water clarity was down to 62.3 feet, according to the Tahoe Environmental Research Center at the University of California at Davis.