Alertshirt (bright yellow/green, the kind road workers use). If wearing rain/winter gear, it's yellow. If out after dark, an ANSI reflective vest over the top.

Up front, solid headlight in the winter/dark, strobe in daylight (500 or so lumens either way).

In the back, at night one light set on solid and one flashing. In daylight, both flashing. Running with only a single taillight is a non-starter for me, since I wouldn't know if my taillight stopped working, so I want some backup.

One solid/one flashing helps drivers to judge distance/closing speed and if you believe in target fixation may help with that too.