求翻译：超车的准备不是在超车时，而是从看到前方车辆及路况时就开始了。超车的准备主要是掌握前方的路况和路上其他的相关情况，并在接近前车时观察好后方的情况，做好超车的预测。是什么意思？

Overtaking prepared when not overtaking, but began when seen from the front vehicle and road conditions. Overtaking prepared mainly lies in front of the traffic, and other related situations on the road, in observation well towards the front and rear of the case, prediction of overtaking.