ProViz clothing seems to be a real help, stealth colours often, and a great reaction when head lights light it up.
Having dual lights is one of my choices too, I have rechargeable and battery light front and rear, and carry spare batteries so that I’m not caught without lights. I have found that even a Moon meteor 250 (old one) and a battery smart front light give enough light for unlit roads, but I don’t rush about.
Same for the rear, just bought a Moon Comet for the rear, which I run with a battery Smart R1, also I have put Cateye bar end lights on the drops too, which I feel has showed the width of me... others may not agree, but I feel that wider passes have resulted from this.