What position are you taking within your lane?
Drivers often filter out anything near the curb, looking only where they expect to see other vehicles. You could be lit up like a Christmas tree, but if you're too far to the right, they'll unconsciously ignore you as "not traffic."
It's generally safest for bicycles to be near the center of the lane at intersections -- it increases your visibility to motorists, and increases your sight-line down cross-roads to your right.