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à¹€à¸¢à¹‡à¸™à¸‰à¹ˆà¸³ à¸ . à¹à¸¥à¸° à¹à¸ªà¸‡à¹€à¸žà¸Šà¸£à¸‡à¸²à¸¡ à¸š., â€œEstimation of Highway Maintenance Cost due to Heavy Truck Trafficâ€, Thai NCCE Conf 28, à¸›à¸µ 28, à¸™. TRL75â€“1, à¸.à¸„. 2023.