When preparing to turn left, move laterally and approach the center line or use a left turn lane where available. When preparing to turn right, approach the rightmost side of the roadway or use a right turn lane. When proceeding straight, stay out of right-turn lanes and use the thru-lane instead.
Use destination positioning: Merge into position earlywhen preparing to turn left or when avoiding a right turn lane. If you wait too long you may be unable to merge and will be stuck in the wrong lane or position. Don't risk swerving across the path of traffic at the last instant. It's far safer to get in line, even if other drivers must wait behind you for a few seconds. This way other users know where you intend to go.
Use the proper lane: Use the rightmost lane headed to your destination. If the lane is narrow, occupy the center of the lane. If the lane is wide, you may decide to share it with another road user. Use the right part of a lane when faster users should to pass you on the left; use the left part of a lane when you want to allow right-turning drivers to pass you on the right.
The safest place: All of the drivers in this picture know where the cyclist is going when the light changes: left. By merging early, the cyclist was able to properly position himself. There's really no safe or legal way for a driver to turn left from the curb in traffic, but if you prefer, you can dismount and cross as a pedestrian in two signal phases by stopping at the opposite curb. Next: Traffic Signals