There are a few high-speed left turns at 'Y's that I either need to take the lane on aggressively and pray that all of the drivers around me are doing the right thing at that moment, or pull off to the shoulder/gutter and cross when clear.

Having said that, though, those really aren't the worst locations- all of those 'Y's have very deliberate traffic patterns through them- no surprises. The most dangerous section of my ride is a straight section of road with lots of small residential cross-streets and businesses on it. Cars randomly pull in and out off the sides, are randomly parked on the shoulder, etc.

And wind. Something about the patterns often gives me a hefty headwind in the morning, and a light headwind in the evening.