I should have clarified that Cateye rear lights are good. Good lighting and battery life, not expensive.
Personally, if I’m on any road in daytime, country road especially (on a hybrid touring bike), I have an exceptionally bright, flashing rear light. You’d have to be blind not to see it, obviously as it gets dark, I switch to night mode.A touring recumbent!? That's almost like lying down in a country road waiting for a speeding car like a hedghehog - it's risky enough with an ordinary bicycle. I know many have a little hi-vis flappy flag but that's easy to miss and (in my opinion) not understood by most drivers.