Maneuvers

The key to safety is predictability. For the most part, you want to turn, pass and change lanes just as you would in your car.

To change lanes, look behind you for traffic and signal first. Traffic in the lane you want to move into has the right of way. Look back and wait for an opening in traffic before moving over. Start looking for an opportunity to get in the correct lane at least 1 block before the intersection.
Use the correct lane for your destination. Go straight in a through lane, not a right turn only lane. Other drivers expect all the vehicles in that lane to be turning right. Make left turns from the left lane, if there is one, or the left side of the through lane.
Left Turns: For bicyclists, there are two legal options: Look back for traffic, signal, and move to the left turn lane or left side of lane. If traffic is very heavy or you feel uncomfortable crossing many lanes to turn left, cross to the other side of the intersection as if you were continuing straight and pull out of traffic. Wait for the light to change again and then continue straight to your destination as if you had come from the street to the right.
Pass cars and busses on the left, with at least three feet of clearance. That is where other vehicles expect faster traffic to be. Passing on the right could get you squeezed against the curb if the car or bus pulls over, opens its doors or makes a right turn.

How to Avoid a Crash: Ride in the direction of traffic only. This includes on-road bike lanes. Obey traffic signals, and don't run stop signs. Watch for cars turning into your path without yielding. Watch for cars pulling out of driveways or side streets. Cross railroad tracks, storm grates or pavement cracks as close to a right angle as possible. Check behind and around you before changing lanes or turning.

Signal your lane changes and turns so that drivers and other cyclists know what to expect.

Going straight through intersections: If you are in an extra wide right lane or there is likely to be significant traffic going right, discourage cars from passing you on the left and turning in front of you. Move toward the center or left of the straight-ahead lane as you approach the intersection.

Let other bicyclists know you are going to pass them. Give an audible warning and pass with enough clearance.