Regulation 4 Circumstances in which road humps may be constructed and maintained
Save as provided in regulation 7, no road hump shall be constructed in any road unless the requirements specified in paragraph (2) below are satisfied.
The requirements referred to in paragraph 1 above are that—
in the road there is either—
a system of carriageway lighting furnished by at least three lamps lit by electricity and placed so that not more than 38 metres separate any of the lamps from the one next to it; or
lighting specially provided for the hump; and
in respect of the hump or, where there is a series of road humps, the first hump in the series to be met by approaching vehicular traffic, at least one of the requirements specified in paragraph (3) below is satisfied.
The requirements referred to in paragraph (2)(b) above are that—
all vehicular traffic approaching the hump will within 40 metres the hump either enter the road in which the hump is placed through a junction with another road or pass through a horizontal bend where such traffic requires to make a change of direction of not less than 70 degrees within a distance of not more than 32 metres;
all vehicular traffic approaching the hump from the closed end of a cul-de-sac will meet the hump within 40 metres of that end; or
all vehicular traffic approaching the hump will within 60 metres of the hump pass a traffic sign, addressed to such traffic, of the type specified in diagram 1002.1, 1003, 1003.1 or 1003.3 in Schedule 2 to the Traffic Signs Regulations.