When making a left turn, you should start the turn:

Question

When making a left turn, you should wait until you reach the center of the intersection before actually beginning to turn. Due to off-tracking, the left side of your vehicle could hit another driver if you begin turning too early.

Accepted Answer

No sooner than the center of the intersection.

Answer

Before reaching the center of the intersection.

Answer

After your rear wheels have passed the center of the intersection.