Abstract: Remote sensing interpretation of the Siliguri Corridor, West Bengal, India was carried out based on 33 scenes of multispectral remote sensing images from GF-1 and GF-2 satellites, which cover an area of 154 814 km². As a result, the mileage, density, and distribution of highways at all levels in the Siliguri Corridor were obtained, and the overall characteristics of the transportation in the area were ascertained. Then this paper assessed the trafficability in the selected key areas using the weighted scoring method from the aspects such as landform, lithology, geologic disasters, and road conditions. Furthermore, the factors such as the variation and relative decrease rate of whole network’s efficiency (ΔE and e) of 19 pivotal nodes were calculated using the complex network theory. They can be used to characterize the importance of pivotal nodes relative to the overall trafficability of the road network. For the four most important pivotal nodes, the geological environment characteristics (i.e., important targets, slope, and engineering rock and soil masses in the peripheries of the nodes) were analyzed and potential disasters and risks were proposed.