rumble strip
noun [ C ] uk/ˈrʌm.bəl ˌstrɪp/ us/ˈrʌm.bəl ˌstrɪp/
齿纹震动带，隆起标志带，减速振动带（路面上狭长的隆起带，汽车驶过时发出隆隆声，提醒司机减速或不要太靠近某物）
one of a set of raised strips on a road that makes a low sound when vehicles drive over it to warn drivers to slow down or change direction because they are getting close to something