One thing you should note is that the hand signals Americans are supposed to give differ from most other countries'. If you are turning left, you stick out your left hand. But if you are turning right, you do not stick out your right hand. Instead, you stick out your left arm and bend if at the elbow（肘）so your forearm is at right angles to the ground and your hand is about level with your head.
Cycling on the Right
When you travel by bike, always ride on the right of the road. The safest way to turn left is to stay at the edge of the road, stop opposite the point that you want to cross to and then go straight over when the road is clear.
Locking up Your Bike
Do be very careful about locking your bike up. You will notice many American cyclists carrying enormous chains（链条）for this purpose, and you will see that in many areas they take pains to pass the chain throught the frame and both wheels and to attach the bike to something fixed like a lamp post.You will even see people taking their front wheel off and carrying it with them when they leave the bike. Stealing bikes（especially ten-speed bikes）is obviously big business.
Because of the sporting/exercise-oriented associations of cycling, Americans very often wear sporting type clothing , Americans very often wear sporting type clothing when on a bike, and women very rarely wear skirts or dresses. Many cyclists also wear light crash helmets（防撞头盔）.