What does the idling law specifically aim to protect?

The idling law is specifically designed to protect environmental health. Excessive idling of vehicles contributes to air pollution by releasing harmful emissions such as particulate matter and greenhouse gases. By limiting the time vehicles can idle, the law aims to reduce these emissions, leading to cleaner air and a healthier environment for the community, particularly in areas with high traffic or near schools where children are present. This focus on reducing pollutants aligns with efforts to combat climate change and protect public health, making environmental health a primary objective of the idling law.

While the other options may have some relevance, the law's primary intention is to address environmental concerns rather than directly affecting student safety, driving efficiency, or fuel economy. Reducing idling can indirectly benefit these areas—such as potentially improving air quality for students and conserving fuel—but the main goal remains the protection of environmental health.