boulevard ruleglossary / BOULEVARD RULE boulevard rule. The principle that the driver of a vehicle approaching a highway from a smaller road must stop and yield the right-of-way to all highway traffic. [Cases: Automobiles 171(5).] 词条贡献者 译员Clara,毕业于国内知名法学院,擅长翻译有关建筑领域的法律文件。