@mszll This is the kind of thing we are getting as 'best practice' in new development areas. Two way bike lanes in less than the width of one car lane. In this case there is not even a space constraint, the provision of an extra wide footpath and wide plantings has been thought about, but the fact cyclists might not want to ride single file all the time has not.
@jroper Exactly, it's an underestimated issue, also because it is such a long-term issue. This issue is hitting Copenhagen everywhere now - bike lanes are too narrow in many places and it is hard to extend them. How are the barriers in Sydney implemented? How do they look like? (I am trying to collect international examples in the spectrum of permanent to flexible solutions)