Don Muang Tollway Public Company Limited (DMT.BK) operates the Uttraphimuk Elevated Tollway, a 21.9-kilometer toll road in Thailand connecting Din Daeng to the National Memorial Monument; provides toll collection through multiple payment methods including electronic systems; manages traffic with advanced technology for efficiency and 24-hour operations; offers roadside rescue, maintenance, and infrastructure repair services; and maintains an EV charging station for emergency assistance and operational vehicles. The company serves vehicles traveling between Bangkok and northern regions including the Upper Central, Northern, and Northeastern areas under a Build-Transfer-Operate (BTO) concession with the Department of Highways expiring in September 2034. Founded in 1988 and headquartered at 40/40 Viphavadi Rangsit Road, Bangkok, it targets commuters and long-distance travelers in the transportation infrastructure sector. In recent developments, the company listed on the Stock Exchange of Thailand (SET) in May 2021 to fund debt repayment and pursue public-private partnership opportunities in intercity motorways and non-toll ventures like highway rest areas; formed a joint venture named A Siam Infra Company Limited with three Japanese partners for infrastructure projects; and enhanced services with technology upgrades and sustainability initiatives including EV adoption.