Which of the following is an example of an environmental mitigation measure?

Constructing noise barriers is an example of an environmental mitigation measure because it addresses the impact of construction and road traffic on the surrounding environment, particularly noise pollution. Noise barriers are designed to reduce the sound levels that reach sensitive receptors, such as residential areas, schools, and parks, thereby helping to protect the quality of life for people living nearby. By implementing noise barriers, projects can minimize disruptions and comply with environmental regulations aimed at reducing noise impacts.

In contrast, upgrading road surfaces primarily focuses on improving structural integrity and performance of the road, without directly addressing environmental concerns. Extending work hours generally pertains to project efficiency and scheduling rather than mitigating environmental impacts. Increasing equipment size could potentially lead to higher emissions and noise levels, counteracting any efforts to protect the environment.