http://www.legislation.gov.uk/uksi/1997/3053/regulation/5/made

The Traffic Signs (Temporary Obstructions) Regulations 1997

Vehicles

King's Printer of Acts of Parliament

2015-03-19

ROAD TRAFFIC

These Regulations (which revoke and replace, with modifications as to both form and content, the Traffic Signs (Temporary Obstructions) Regulations 1985) authorise persons not otherwise authorised to do so to place specified traffic signs on roads in connection with temporary obstructions (regulations 15 and 16). The indications given by the signs which may be so placed are specified in regulations 4 to 7 and the form of those signs is prescribed by regulations 8 to 14. Regulation 4 also prescribes the “keep right sign” for the purposes of section 36 of the Road Traffic Act 1988 (signs with the indication of which it is an offence not to comply). There are savings for the Traffic Signs Regulations 1994 and for regulations relating to motorways (regulations 17 and 18).