Absolutely use lights, day or night.
Articles discussing the merits of lights:
https://pubmed.ncbi.nlm.nih.gov/22884376/
https://cyclingtips.com/2017/02/see-...unning-lights/
https://floridacyclinglaw.com/blog/d...-help-cyclists
I ride motos too and the high beam is on during the day. Yes, it works.