Arunachal Pradesh's West Kameng district administration has implemented new regulations for transporting hazardous goods through the Sela Tunnel to enhance public safety. Vehicles carrying inflammable liquids like petrol and LPG can pass between 1-3 PM and 11 PM-4 AM. Army vehicles with hazardous materials require prior notice. The order also details winter/monsoon traffic management, BRO's maintenance responsibility, and mandatory safety equipment for vehicles and the tunnel.