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I struggled recently on a forum ride to follow roadie conventions letting drivers squeeze past on country lanes. It also why I would feel squeezed in cycle lanes if I used them

Firstly, 'roadie conventions' are behaviours which have been established over many years of riding (solo/small groups/large groups) around the lanes, and are as much about public relations as safety; and equally effective for both purposes.

Secondly, I'd never describe a forum ride as employing roadie conventions, because the personnel invovled are far too diverse. If you want to experience roadie conventions, you need to join a club ride.