The Cavite–Laguna Expressway (CALAX or CALAEX) is a partially operational controlled-access toll expressway in the provinces of Cavite and Laguna, Philippines. The construction of the 44.63-kilometer-long (27.73 mi) expressway, which began in July 2019, costs an estimated ₱35.43 billion.
"A very good outdoor emergency communication device, powered by solar energy, convenient for power supply and cost-effective, and waterproof and sealed." -------Highway construction personnel
HONGKONG KOON Technology LTD exported EMERGENCY TELEPHONE to Iran in October 2019. Project name used for installation: Alburz Tunnel, Tehran-Shomal freeway. Product model: KNZD-13 IP,
The road telephone call box is an emergency help phone booth specially installed on the road to facilitate the driver to have an accident on the road and urgently ask the staff or the police for help.