关键词: 驾驶员行为, 安全距离, 车辆跟驰, 二维云控制

Abstract: The velocity of the vehicle on the road is non-constant，and the velocity of the following vehicle changes also.The driving behavior is difficult to be accurately described with mathematical model for the uncertainty behavior characteristics displayed in the driving process.This paper proposes a safe distance control algorithm of car-following based on two-dimension cloud model，and the algorithm is tested by simulation of anxious acceleration/deceleration in car-following process under the impact of unexpected events.

Key words: driving behavior, safe distance, vehicle-following, two-dimension cloud control