I find the Chinese model of bike/scooter lanes w/ barriers integrated into the main road a superior model. The other critical point is integrating bus stops into "islands" in the road so the bike lanes go behind the bus stops is critical. (a stopped bus with passengers going on/off essentially closes off the shoulder for an extended amount of time). Granted the main roads in Chinese cities are generally much wider so I'm not sure if it can be miniaturized the same way. The "turning area" is very useful concept for unblocking traffic and helping with visibility, though it does take up a lot of space. However the one in the example only accommodates one turning car at a time