Interesting 2 hours spent counting this morning.
Summary
409 cars entered left turn filter lane
365 bikes entered intersection, a number turned left, not counted accurately but estimate 20%
25 buses, all route 401. Not sure what's going on here as Grattan St closure has not yet happened, and this is fewer than 50% of scheduled services.
What was really interesting is how considerate of each other both motorists and cyclists were. Lots of cars stopping and looking for bikes, lots of acknowledgment from riders. Will be interesting to see if this continues when traffic increases and drivers who are not yet familiar with the intersection are added to the mix. That said, they are likely to be used to dealing with bikes when turning left into Grattan St, so there are grounds for optimism here.
Another thing that I noticed is how difficult the move left is for drivers because of the geometry of the merging lanes. Drivers have to look hard over their left shoulders. Left mirror is not useful and columns in vehicle may also obscure vision.
In general the parking area immediately adjacent to the merge was not heavily used but for a short period a large delivery van was there and this blocked the view of oncoming bikes (and cars!). Removal of 2-3 car parking spaces closest to the intersection would improve sight lines for all users. As I mentioned yesterday, I have seen a semi trailer parked here and this reduced vision to zero.
That's all for now
Helen