Originally Posted by banerjek

I never used a front flasher before moving to Portland, but I've found front flashers to be helpful in daylight and lower light levels where lights are for visibility rather than illumination since it helps people make you out in all the urban visual noise who would pull in front of you or right into you. I make sure whatever I'm doing with my lights is appropriate and I verify my setup by putting my eyeballs at drivers height from multiple distances.

Any bright light that flashes will have multiple modes for different circumstances. Night time flashing has much less utility than daytime flashing, but night time flash modes are more of a pulse that's not so disorienting. The yahoos I see run super bright daytime flashers that would be appropriate in bright sunlight on a highway at night.