Yes. The lane is much too narrow to share with a car, maybe 10 feet wide, with almost no shoulder. At the section where this happened there is also a blind curve where oncoming traffic can show up unexpectedly. I also hold the lane when I see oncoming traffic on the straight sections.

On this road I find it best to just take the center of the lane by default, and only move right when there is no oncoming traffic or blind curves. The speed limit is 30 and 35, but of course the motor vehicles like to go about 10 over that. Traffic is light to moderate, so no one gets held up by me for more than 30 seconds or so, usually much less. I often signal slow/stop and/or look back to communicate to overtaking motorists that I know they are there, and expect them to wait for a few seconds. When they do (which is about 99% of the time*) I often give them a friendly wave as they pass.

*Without communication compliance is only about 50% no matter my lane poistion. They will pass on blind curves if you let them.