Abstract: As the wind power equipment is heavy and its blades are long，it requires a special highway to transport，which belongs to special equipment transportation． As there is no specification for the highway alignment design of large-scale wind farms in the mountainous areas in China，the relevant indexes of large blade transportation vehicles，which influence the highway profile design，are systematically investigated in this paper． From the four aspects of mitigating the impact in the vertical curve of vehicles，ensuring an adequately long travel time，keeping the blade tail from scraping the ground and restricting the pitch angle，the minimum radius and length of vertical curves are analyzed，and the models to calculate the minimum radii and lengths of concave and convex vertical curves are constructed under different constraint conditions． Finally，the minimum radii and lengths of vertical curves are recommended for the large aerogenerator transportation with various design speeds and scopes of algebraic difference in grades． The results can provide guidance for the highway design and construction of the aerogenerator transportation，and can also be used to formulate the standards relevant to the aerogenerator transportation highway．

Key words: wind power generation, highway design, minimum radius of vertical curve, minimum length of vertical curve, mountainous wind farm