I just put a 500 lumen LED flashlight on the front of my commuter and it seems automobiles behave a bit different at night compared to when I only had my Planet Bike Blaze which I actually found pretty useless for illuminating the road.
Perhaps my light is demanding attention and stands out more compared to the the PB Blaze which may have been pretty easy to miss even at night or easily ignored because it is small and narrow light output. I'm now using the Blaze in strobe at night with the flashlight set to high. With a 18650 battery, it'll only go about 2 hours, but that's enough for 3-5 days of commuting and errands.
I don't really like that the hot spot lights up pretty high when aimed in a useful manner, there really isn't much I can do about that. At about 100 ft, the hotspot can be about 6 ft tall.