تمامی پرداخت های این سایت توسط درگاه شرکت به پرداخت و بانک سامان به صورت کاملا امن انجام میشود.
لیست محصولات این تولید کننده : AASHTO
استانداردهای حمل و نقل و بزرگراه امریکا
American Association of State and Highway Transportation Officials (AASHTO)
The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test protocols and guidelines which are used in highway design and construction throughout the United States. Despite its name, the association represents not only highways but air, rail, water, and public transportation as well.