驾驶轻便的车辆走在熟习的道路上。比喻非常容易。《宋・张矩・摸鱼儿・猛思量孏窝初度词》:“君看取,世道羊肠屈折。依然熟路轻辙。”
英语 be in one's element(do something one knows well and can manage with ease)