What does class 9 H means while classifying road of border road organisation?

In the classification of roads by the Border Roads Organisation (BRO) in India, Class 9 (H) denotes a specific category of roads that are intended for high mobility and heavy traffic. These roads are designed to support heavy vehicles and military transport, ensuring access to remote border areas. The classification helps in the planning, construction, and maintenance of roads to meet strategic and logistical needs in challenging terrains.