My commute in starts at 5am. During late spring through summer, I'll start getting light about halfway to work. The rest of the year, it's dark for the whole 11 miles, most of which is on 45mph+ expressway. Light traffic at that hour, but the cars I do interact with tend to be the ones cutting me off as they exit the expressway. The hairiest part is negotiating the freeway on/off-ramp to the 101. Again, a lot of drivers seem to have issues judging distance and speed in the dark so I wind up getting cut off. I've got a red Spok light in my spokes on my back wheel, a Radbot1000 on the back of my rack; dedicated Bell flasher and Terralux Lightstar 220 for a headlamp. Rear indicators are more than sufficient (can't miss that crazy, Radbot flash pattern paired with a red light going round and round), although I should get a better headlamp. I've been putting it off for sometime since the Terralux is "adequate."

If I could start work an hour later, I'd be much happier with my ride in.