By the way, a 'Dad voice' only goes so far in traffic. Lights are unnecessary in the daytime. Literally unecessary. You cannot be ticketed for not having lights on during the day. A car has an alternator that keeps the battery charged so your lights always work (if not you get a $65 ticket). Lights last much longer if you save them for nighttime use only, and even longer if you use them in blink mode. A good thing because if you are stopped (at night... hint) for not having working lights the ticket is $300.