I'm looking at your videos Matthew, please take this as constructive, not criticism because its difficult to guage your riding style, general positioning, what the drivers are like in your area, etc etc. So many videos, so many incidents.
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As said, more than ive seen in my entire cycling life of 40 plus years.
Some of the passes/incidents are genuinely close/wrong, no doubt, but i look at some of your videos and think...whats so wrong with that ?
I'm on record as saying i love my cycling and won't let the occasional stupid incident spoil it...i do wonder if you've allowed the incidents to change you perception of drivers and your reaction to them.
Perhaps i'm wrong, if so apologies, but perhaps you need to re-assess what you're getting back from cycling and change your style. Personally i use primary
very very sparingly, i dont seem to suffer from doing so, traffic still moves, everyones happy. I prefer a strong secondary, it doesnt seem to inflame drivers, it still gives me room to move if i need to. Thats just one aspect, its not all about primary, more an overall style/positioning/ reaction etc etc.
As said, please take it as constructive (whether i'm right or wrong i dont know, i dont ride in your shoes)