What does NSC stand for in the context of safety regulations?

In the context of safety regulations, NSC stands for the National Safety Code. This code outlines safety standards and regulations for commercial vehicle operations, aiming to ensure safe and efficient transportation practices across jurisdictions. The NSC provides guidelines that are vital for maintaining consistent safety measures, which are crucial for both operators and the general public on the road. Understanding the NSC is important for anyone involved in heavy trailer operations, as it covers aspects such as vehicle inspection, driver qualifications, and hours of service. This helps in promoting safe driving habits and preventing accidents associated with heavy vehicle operations. The other terms listed do not pertain specifically to safety regulations in the context of commercial transportation, which reinforces the significance of the National Safety Code as the correct answer.