基于用户心理空间的自行车道安全评价研究

Research on the bicycle lane safety evaluation method based on user psychological space

针对自行车道安全评价问题,建立了用户心理空间模型,用以反映用户安全心理范围。利用自行车道上骑行轨迹线数据,采用积分的方法,计算用户之间心理空间重叠面积。用事件前、后心理空间面积的变化、事件过程中的平均重叠面积及平均心理空间面积,计算用户心理空间影响率,以用户心理空间影响率和持续时间来反映事件对用户骑行安全的影响程度。以各个事件的影响率与持续时间的乘积之和定义用户骑行安全度,并将用户骑行安全度的均值定义为道路安全度,作为评价自行车道安全性的指标。通过对10条自行车道安全服务水平的理论计算和主观评分,将自行车道安全服务水平分为5个等级,并建立了基于用户心理空间的自行车道安全评价步骤。实验结果表明:基于用户心理空间的自行车道安全评价能更准确表达用户在骑行过程中的心理安全程度,且该方法可操作性强。

Aiming at the bicycle lane safety evaluation issue,the user psychological space model was established,which reflected the user＇s safety psychological scope. According to the data of bicycle trajectories on the bicycle lane,the overlapping area of user psycho logical space was calculated by the integral method. The influence rate of the user＇s psychological space was calculated by the changed area of psychological space, the aver age overlapping area and the average psychological space area. The degree of the influ ence of user riding safety was reflected by the influence rate and the duration. The user＇ s riding safety degree was defined by the sum of the product of each event＇s influence rate and the duration. The mean value of the user＇s riding safety was defined as the bi cycle lane safety degree,which was used as an index for evaluating the bicycle lane safe ty. Based on the theoretical calculation and subjective score of the safety service level ofchological security of the user in the process of riding, and the maneuverabilPty of the method is strong.