1. Check your blind spot if you are changing lanes
When approaching a controlled intersection with multiple turn lanes, you should check your blind spot if you are changing lanes.
Blind areas are areas on the sides of your car that are not visible on your rearview mirror or mirrors - to make sure these areas are clear before changing lanes, you will have to physically turn around to see what kind of crazy things are going on there. All you need to do is look over your shoulder and mirror to make sure you are safe beyond that.
Whenever you change lanes or encounter, you'll want to check out any blind spots in the car at your driver's first glance. Flip on your turn signal to let other cars know you will be moving over, and check your rear mirrors and side car mirrors.