On Wed, 20 Apr 2016 02:36:17 +0100, Rob Morley <
nos...@ntlworld.com> put
finger to keyboard and typed:
It's in the Road Vehicle Lighting Regulations 1989, as amended by various
other legislation.
There are two relevant prohibitions on flashing lights. The first is that
vehicles may not be fitted with flashing lights of any colour, other than
for certain defined purposes (such as indicators, hazard lights and
emergency service lights). Those purposes do now include the use of white
and red flashing lights on the front and rear of pedal cycles, but that
doesn't extend to the use of other colours.
The other prohibition is that blue flashing lights - or something that
looks like a blue flashing light, even if non-functional - may only be
fitted to vehicles used for the purposes of the emergency services. There's
a pretty long list of purposes which fall within the category of "emergency
services"; it's by no means just the main ones everybody knows about. But
if you were in one of those categories you'd know it, so if you have to ask
whether you're permitted to use a blue flashing light then the answer is
going to be "no" :-)
Fixed (non-flashing) lights have somewhat different rules. Broadly
speaking, any colour light can be shown to the side of a vehicle, any
colour *except* red can be shown to the front of a vehicle, but *only* red
may be shown to the rear of a vehicle apart from certain other colours in
certain defined circumstances (such as reversing lights, warning lights and
lights used to illuminate things like number plates and route indicators on
buses). None of those exceptions to the "red only to the rear" rule
includes any blue light. So you cannot show a blue fixed light to the rear
of a vehicle.
However, all of these rules only apply to lights fitted to the vehicle
itself. So, as a cyclist (or, for that matter, a pedestrian), you can light
yourself up like a Christmas tree if you want and you aren't breaking any
of these laws.
Using blue flashing lights, though, may fall foul of the laws against
impersonating a police officer. It isn't necessary to wear a police uniform
or carry any specific item of police equipment, all that's necessary is to
carry out "any act calculated falsely to suggest" that you are a police
officer. And having blue flashing lights on a cycle, even if not actually
attached to the cycle (and hence not illegal under the lighting
regulations) could easily fall foul of that. The rationale used by the
prosecution would go something like this:
a) Everyone associates blue flashing lights with the police,
b) If your use of flashing lights was intended solely for visibility,
you would choose a more appropriate colour (because blue isn't actually
the best for that anyway),
c) Therefore, your use of blue must be at least partly in order to cause
others to think that you may be a member of the police, and
d) All that's necessary for the offence is to deliberately suggest that you
are a member of the police, it doesn't need to be a successful or even
particularly plausible deception.
In practice, it's very unlikely that anyone would be prosecuted for this,
but it's the sort of thing that the police would take an interest in
if/when they have one of their regular crackdowns on law-breaking cyclists
in an area. It's also possibly more likely to draw their attention to you,
so if you're in the habit of doing the various other illegal things that
cyclists are often accused of doing - such as cycling on the pavement,
jumping red lights and going the wrong way up one-way streets - then having
bue flashing lights on while you do it will increase your chances of being
stopped. So, all in all, I wouldn't advise wearing them.
Mark
--
Insert random witticism here
http://www.markgoodge.com