The smooth of bituminous road surface would directly show index of expressway applica-tion character and the driving quality. It should be taken the adequate technical measures to keep the smooth of bituminous road surface as requirement.

• 沥青混凝土路面的平整度是反映高速公路使用品质与行车质量直接的外观指标,因此应采取适当的技术措施,保证该路面平整度的要求。