为了获得汽车转向行为特征与弯道几何特性之间的关系，用一辆小客车模型在 ADAMS软件环境下开展了不同驾驶行为模式下的弯道行驶试验，得到了进弯、维持、出弯三个阶段的转向行为参量，以及弯道转角、半径变化时转向参量的变化规律，并得到了转向特征点与弯道特征点之间的拓扑关系。结果表明：驾驶人采用切弯模式时，进弯和出弯的转向行为是以弯道中点对称的，而采用跟弯模式时的转向过程是序列的，即进／出弯的转向提前距离小于其后的转向延续距离；切弯行驶时，汽车临近弯道时的转向提前距离要大于跟弯行驶，即车辆更早开始曲线运动。%To obtain the relationship between steering behavior characteristic and the curve geometrical characteristics ,simulation tests of a passenger car dynamics model driving on simple curves under dif‐ferent driving behavior patterns were carried out in ADAMS software environment .Steering behavior parameters of passenger car of the three stages ,curve entrance ,curve middle and curve exit ,are ob‐tained ,and as well as the effect of curve deflection angle ,curve radius and driving pattern on steering parameters .Topological characteristics between feature points of steering process and feature points of test curves have been analyzed . T he results show that :w hen driving pattern of curve cutting is used ,steering behaviors of entering a curve and exiting a curve are symmetrical around the midpoint of curve ,while driving in pattern of curve following ,the steering process is a sequence that steering advanced distance of curve entrance/exit is less than subsequent steering delay distance ;w hen driving in curve cutting pattern ,steering advanced distance of curve entrance is greater than that of curve fol‐lowing pattern ,that is ,curvilinear motion of vehicle is started earlier .This study can provide a scien‐tific reference for the length control of transition curve ,installation of traffic signs and driving behav‐ior studies .
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