The transcontinental traverses (TT) in the conterminous United States will contribute to the framework of high precision control for a new adjustment of the triangulation networks consisting of about 125,000 stations. This high precision traverse net, forming eight loops and extending over a distance of approximately 22,000 kilometres, is being established with relative accuracies of about one part per million along the traverse. Plans have been made to observe positions, using Doppler equipment, at more than 100 stations spaced at intervals of about 300 kilometres throughout the United States network. The Doppler positions will be used to supplement the scale control in the overall adjustment of the net. Previous evaluations have indicated that positions obtained by Doppler have accuracies in the order of one or two metres. About 35 positions of stations along the transcontinental traverses have been determined by Doppler. These results are compared with results obtained from the high precision traverse surveys.