本文介绍了对机动车超速自动监测系统现场测速误差不确定度分析的一种新方法。由于受条件限制无法向以往在实验室检定其他计量器具那样,通过常规的测量方法得到测量结果的重复性,因此在对现场测速误差的不确定度分析时就需要一种新的方法。 This paper introduces a new method to analyze the uncertainty of on-site speed measurement error of vehicle over-speed automatic monitoring system. Due to the limited conditions, it is impossible to measure the repeatability of the measurement results by conventional measurement methods, as in the past in laboratory testing of other measuring instruments. Therefore, a new method is needed in the analysis of the uncertainty of field velocity error.