Take a trip to your nearest DMV to pick up your state's driving manual. These usually have a section devoted to bicycles. Study and memorize that section and keep it near you at the ready. Check with your city or town police for local laws and regulations regarding bicycle riding in the city/town limits. Some go the extreme of even requiring you register your bicycle with them since it will be a road going vehicle. Plus it will make it easier for them to recover your bicycle if it's stolen. When I come up on a bicycle I usually tap my horn twice to let him/her know I'm there before going to pass. If it's at night I'll flash my brights. I use to ride in the city and know that I can't hear a car behind me because of the wind in my ears. Most people can usually tell by the honk of the horn what message they're trying to send. A light tap or double tap is to say "hey, I'm behind you so be careful." If they're practically screaming with their horn then they need to change their bloodpressure medicine. Bicycle riding isn't safe on the road I live on. You know the white line on the outside of the lane? Some parts of the road, that white line has fallen into the ditch. Miss living in my hometown. Most in town roads' speed limit was between 25 and 35 and it was strictly enforced. I use to ride to the store, visit neighbors and family, or even just to get a bite to eat at the drive-in burger joint. That was back when you could park your bike without locking it up and you knew it would still be there when you were done.