I tend to not let a road sign influence me regarding speed selection unless the sign is something out of the ordinary, like that cute little orange diamond shaped one on a temporary road side barricade that states "loose gravel"
The speed I carry into a curve depends on a lot of things, most importantly for me, how "on" I am that day, or at that part of the day. There are times where I'm fluid and fast and times I'm out of sync with the bike and I back off. There is only a couple MPH difference between those two experiences, but that is all it takes to move out of your comfort zone.
Well said! I used to ride quite a bit with a guy who was about equal to me on twisty roads. We always left several seconds between the bikes, took turns leading, and neither usually felt either pushed or held back.
One day in Washington state (great day, great road) my friend was leading, riding below the speed limit and I wanted to GO. He slowed more and waved me past to have my fun. I pulled over where the road forked and 5 minutes later he showed up.
"What happened?" "My mind was on other things and decided to pull over until I could get it back on riding." I thought that was one of the wisest things any rider has ever said to me.
None of us are always "on our game." Since then I have occasionally pulled over but even more often slowed down until I could again focus on the task at hand.