Rear lights, I always have them flashing. For the front;
it depends on the situation. On a quiet bike path at nite;
low or medium steady. On a steet with a lot of traffic;
day or nite - flashing. If I'm on an unfamiliar street at
nite; hi steady to look for potholes/debris.

https://www.youtube.com/watch?v=_G74...6zPoymgKaIoDLA