Chiming in about lights. We recommend going beyond what's legally required in California; that is, we use a rear light on bicycle, not just a rear reflector. BTW, our bike law summary—in #Spanish and English— is handy to share with people unaware of California's legal requirements about lights and reflectors: https://bikemonterey.org/wp-content/uploads/Bike-law-summary-Spanish-and-English-1.pdf