Origamist
Legendary Member
It's always going to be difficult to adequately define the secondary position as a fixed lateral position on the road - hence the degree of confusion. Primary is simpler to define, but not without problems.
I simply try to keep a reasonable buffer to both my left and right when sharing a lane, sometimes this means I am 60cms from the road edge (and hazards), other times as far as 1.5m. My position changes according to both lane width, hazards and the general lane postion that motor traffic takes (which of course is not uniform). It's a balancing act and I doubt any two cyclists would adopt exctly the same position in dynamic traffic situations.
I simply try to keep a reasonable buffer to both my left and right when sharing a lane, sometimes this means I am 60cms from the road edge (and hazards), other times as far as 1.5m. My position changes according to both lane width, hazards and the general lane postion that motor traffic takes (which of course is not uniform). It's a balancing act and I doubt any two cyclists would adopt exctly the same position in dynamic traffic situations.