Also, there is a certain segment of drivers where lights simply will not get their attention in every situation even if it's bright enough to scorch their paint. If they're looking at their phone, they won't see any light you put on. "Adding more light until everyone notices me" is a game you can't win given those people on the road.
Just last night while driving I saw a guy in a 4x4 pickup coming towards the cars in my lane drift entirely into our lane. The person in front (2 cars in front of me) slowed nearly to a stop (on a 50 MPH road). When the guy got closer I could see that he was looking down, I assume texting or something like that. He eventually looked up and jerked back into his lane. Had he drifted right instead and had there been a bike there (with a Dinotte retina searer or no), it would have been a bad day for that cyclist.
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Work: the 8 hours that separates bike rides.