3.15 Changing Lanes
A high percentage of crashes occur when vehicles change lanes. This is because
drivers changing lanes are often not aware that another vehicle is already in the lane
into which they wish to move.
To change lanes safely you should:
check your internal and external mirrors; （检视照后镜）
glance over your left or right shoulder to make sure there is not another vehicle in your blind spot; （检查盲点）
check for other drivers who may also be moving into the lane; indicate/signal to change lanes for a sufficient distance to warn other drivers of your intentions before beginning your manoeuvre (the higher the speed the greater the indicator/signalling distance you must give);（提供有效的方向灯指示）
give way to vehicles already in the lane you are entering;
never change lanes while going through, or approaching an intersection; and never change lanes where the line between lanes is a continuous line.
If someone in front of you indicates/signals that they wish to change into your lane be courteous and let them in.
（还是后面挂L牌）
