What term defines a vehicle adapted for the transportation of CNG?

The correct term that defines a vehicle adapted for the transportation of Compressed Natural Gas (CNG) is 'CNG delivery vehicle.' This designation emphasizes the specific function of the vehicle in transporting CNG from one location to another, which is critical in various industries, including energy distribution. CNG delivery vehicles are specially designed or modified to safely handle and deliver CNG in accordance with safety regulations and efficiency standards.

While other options might describe aspects of vehicles in general or suggest a broad category, 'CNG delivery vehicle' accurately reflects the specialized nature of these vehicles, ensuring clarity in their purpose and compliance with industry standards. Understanding this terminology is essential for recognizing the specific requirements and operational protocols associated with transporting CNG safely and effectively.