The only time I have to take the lane on my route is downtown where the speed limit is 15 (I'm not holding them up unless they are speeding) and when I come off/go up one bridge about halfway through my route. The road splits into one lane on each side with a wide median in the center, and it is very curvy/wind-ey with big white domed reflectors on the right side (speed limit 25). There is no room for a car to pass safely and after being buzzed and seriously having some close calls a few times I just take the lane now even though I always get honked at and it takes me about a minute to get through to the part where the road widens.