I have a Knog front light, comes with different brightness settings, aimed low (mainly because public light is crap in my route and I need to see where I'm riding lol). This same company makes MTB lights with a higher lumen count that are not suitable for the road. I'd say look for lights aimed at commuting to be sure.

Where I live most commuters use the cheap silicone chinese lights, which are barely visible. My light is blinding compared to them, but haven't had complaints from motorists.