我学车的时候 教练是这样教的Change lane makesure u check yr mirror clearly untll the lane u are entering fully clear then check blindspot then can change. When u change lane from left to right u can signal first and slowdown. If change from right to left must accelerate lightly until all clear then signal then can change 我理解的是右变左是先检查clear再打灯再变道。左变右可以先打灯再检查clear再变道。 所以suv driver的问题还是检查盲点问题。摩托和她已经并排了应该已经看不到打灯了。