The flashing headlights are probably a bit annoying, but as another poster said its even more annoying when they don't have anything because you can't see them. Many of the paths here end or flow into a neighborhood streets for a few blocks before a new trail starts or at the very least you cross actual roads where you want to be visible as possible. On poster was joking about sunglasses at night, but maybe glasses with the right tint would be just the ticket for you.