从法律层面上来看,机动车限行政策存在诸多问题。“限行令”实质上是限制权利人对自己所享有物权的行使,因而通过物权法的视角进行分析更为适宜。本文将以物权限制为视角,对征用的适用对象、作用效果以及目的性要求等加以阐述,从征用制度中寻求机动车“尾号限行”的法律依据。 From a legal point of view, there are many problems with motor vehicle limit-line policy. “Limit line order ” is essentially to restrict the rights holders to exercise their own enjoyment of property rights, and therefore through the perspective of property law analysis more appropriate. This paper will expound the object of application, the effect and the purpose of the expropriation from the perspective of the limitation of real rights, and seek the legal basis of the motor vehicle “tail number limit line ” from the expropriation system.