Motorcycles in your bus lane

I think the law nowadays allowed motorbikes to have performance exhaust without a noise limited, does that have any effect on the pollution? (beside noise pollution).

no, EU legislation states that motorcycles should conform to noise and pollution standards. However, cats add to a motorcycles fuel consumption, weight and don't have anything like the same impact on pollutants as cats fitted to cars (which have electric heaters to get them up to operating temperatures quickly). Since quiet motorcycles are just as likely to be hit as bikes, many motorcyclists fit louder exhausts as a safety feature. Some of these exhausts ditch the cats too.

Here's the joined up part: EU law tests motorcycles at the point of sale - type approval. The MOT test for motorcycles doesn't include a test for noise or emissions. So there is nothing at all to stop a motorcyclist removing cats and quiet pipes and literally throwing them in the bin.

If I was in your position, not being able to get into an ASL, I would just politely ask the motorcyclist to move forward so you can get into a safer position on the road. Most people would happily move.

Oh, and as a motorcyclist to a cyclist: red lights mean... :D

(understand why, just saying!)