In message , at 11:03:38 on
Sat, 7 May 2011, Steve Firth remarked:

Tssk, Road Vehicle Lighting Regulations 1989

"25.- (1) Save as provided in paragraph (2), no person shall use, or
cause or permit to be used, on a road a vehicle which is fitted with
obligatory dipped-beam headlamps unless every such lamp is kept lit-"

Presumably there's another clause that defines "such lamps" to include
all(?) the vehicle's lights, not just the dipped headlights.

Otherwise all it's saying is that if you have dipped headlights you must
always have them alight. (Which doesn't make sense either).
--
Roland Perry