Hump

A method of vehicle speed reduction using a raised section of road which cannot be driven over at high speeds. Humps are also colloquially known as 'sleeping policemen'. 

Humps are unattractive to cycle over, and should not be employed on cycling infrastructure, unless there is a genuinely pressing need to slow down cycle traffic.

Humps should also be used sparingly on roads themselves. Dutch residential streets are calmed in different ways, principally by the removal of through-traffic, and indirect routes for motor traffic.