What is the correct procedure when changing lanes?

• Check if a lane change is allowed, check the traffic, do a shoulder check, turn on your turn signal, change lanes, then turn off your turn signal.
  Explanation:

  "The correct procedure is to first ensure that lane changes are permitted. Then, check the traffic around you, including doing a shoulder check for blind spots. Next, signal your intentions by turning on your turn signal, change lanes, and turn off the signal once you’ve completed the maneuver."
• Check if a lane change is allowed, then change lanes.
• Check if a lane change is allowed, check the traffic, and turn.
• Turn without checking anything.