Speed bumps (also called traffic thresholds, speed breakers or sleeping policemen) are a class of traffic calming devices that use vertical deflection to slow motor-vehicle traffic in order to improve safety conditions.

2020年10月27日 · 但假如你开车的话，你一定见过：sleeping policeman. Sleeping policeman 不是睡着的警察，而是指马路上专为机动车设计的减速带（见下图）： 其实这个东西的工程术语叫 speed bump，或者 road bump.

2022年1月31日 · In England a sleeping policeman refers to a raised band across a road, designed to make motorists reduce their speed. This term was created by a physicist named Arthur Holly Compton in 1953 when he designed the first ramp to slow down traffic outside his University, that ramp was similar to the speed bumps that we use today.

The phrase “sleeping policeman” is a common idiom used in British English to describe a type of speed bump that is designed to slow down traffic. This term has its roots in the early 20th century, when police officers would often lie down on the road to slow down speeding drivers.

2017年12月7日 · Sleeping policemen: A variation of a speed hump, sleeping policemen are known by their distinctive black and yellow colouring – named as such as they (somewhat) resemble a bright and noticeable policeman outfit lying in the road.

sleeping policeman 减速垄，减速带 释义： a narrow raised part in a road which makes traffic go slowly 减速垄，减速带(为防止车速过快而横设于路面的隆起物)，是 speed hump 的非正式形式。 例句： We should slow down when we pass the sleeping policeman.

When you hear a Jamaican talk about his country's "sleeping policemen," he isn't implying that Jamaican lawmen aren't wide awake. The term "sleeping policeman" is used to describe the hump built across streets to slow down speeders,

slang A bump, ramp, or hump in the road that is intended to cause cars to reduce their speed, especially in residential areas. Primarily heard in UK. There was a real problem of cars speeding around the tight corners near our housing estate, so the local council agreed to install a number of sleeping policemen in and around the area.

A speed bump is known as a sleeping policeman in British English, Maltese English and Caribbean English. Technically speed bumps are a class of traffic calming devices that use vertical deflection to slow motor-vehicle traffic in order to improve safety conditions.

In general, the sleeping policeman has a function not always readily acceptable. I think the clause on the sleeping policeman is a doubtful proposition. They are not, to use that politically …