Seems to me Mr 30 years of police driving didn't like you saying 'Calm down mate' as he hooted at someone else. Wind your neck in and you can ride where you like. You filtered off the 'cycle superhighway' into the other part of the road as he was pulling from the lights, which without knowing if you signalled, looked, or had reasonable space to do that, it's hard to say if he had a point that your riding sucks a bit. Basically, I can see his point. As for the hooting and then sirens, it seems to me he was just getting riled up by you more, and he's wrong to imply you didn't stop when he used the accepted method (siren) in good time.
You could have apologised for riding unexpectedly in the road from the cycle track, and you could have remained more friendly.
Seems to me Mr 30 years of police driving didn't like you saying 'Calm down mate' as he hooted at someone else. Wind your neck in and you can ride where you like. You filtered off the 'cycle superhighway' into the other part of the road as he was pulling from the lights, which without knowing if you signalled, looked, or had reasonable space to do that, it's hard to say if he had a point that your riding sucks a bit. Basically, I can see his point. As for the hooting and then sirens, it seems to me he was just getting riled up by you more, and he's wrong to imply you didn't stop when he used the accepted method (siren) in good time.
You could have apologised for riding unexpectedly in the road from the cycle track, and you could have remained more friendly.
Have you considered cycle training?