I think California requires either reflectors on pedals or reflective material on the shoes, but don't quote me on this.
As far as our retrograd Québec Highway Code is concerned, the requirements are more weird than that of Georgia and Pennsylvania.
At all times, a bicycle must be equipped with:
- white reflector in front;
- red reflector in rear;
- yellow and red spoke reflectors in the front and rear wheel respectively (iow. no white spore reflectors in Québec);
- 2 yellow reflectors on each pedal.
And only at night are a front and rear lights required. Personnally, I would require headlight and taillight to be permanently attached to the bike, so that they are used at night. If it seems strange, such requirements exist for cars (drivers don't store their headlights in daytime), and they also exist for bicycles in Germany. I think German law also requires a batteryless system, but I'm not sure.
BTW, if there are any German readers on the list, do you find that German bicyclists are lit at night?