stewartpratt wrote:I think either point is arguable - at what point does a flow of traffic become a queue? (Rhetorical question.)
If we make an analogy to multi-lane behaviour, though, then where the cycle lane diverts left we have a cyclist entering the main lane at a point (a) where a vehicle is already in it and (b) by crossing a solid line. This manoeuvre is reasonable if you argue that the white paint of the cycle lane is to be ignored, but that argument is directly at odds with defending the undertaking on the grounds of being in the cycle lane. It's either one or the other, you can't have your cake and eat it.
I think it most definitely is arguable.
To my way of thinking cycle lanes are lanes, there's no wishy washiness about them. The rest of it is simply bad design, but fundamentally I think they're lanes and should be treated as such.
Undertaking in the context of what he was doing isn't to my way of thinking a huge no no, (although superficially if it really was like the camera makes it appear then I wouldn't...)
If you can't undertake in a cycle lane then what exactly is the point of them? Someone above (Si?) mentioned they'd be happy to do it in a wide cycle lane (i.e. a bus lane) as would I but I'm sure point of law doesn't specify a minimum width before undertaking is legally OK (with slow moving provisos) so you have to assume that any width is acceptable.
If we accept that they really are lanes then the only point of discussion is whether the traffic to the right is slow moving - yes?
If that's the case then consider this:-
Mostly it's moving faster than him so overtakes him, but then it slows and he undertakes it, this is exactly the situation that is allowed in multi-lane traffic, if the outside lane of a dual carriageway brakes nobody expects the inner lane to brake also. It's allowed to continue at it's own pace - something I believe he was doing.
i.e. The undertaking was a function of the traffic slowing to his right rather than a deliberate manoeuvre on his part.