The presence of MOW equipment either occupying the wrong track or fouling an adjacent track has been the cause of serious accidents in the past.
过去，护路设备占用错误轨道或阻塞相邻车道是造成重大事故的原因。
2
The track list is a sequence in order to preserve the track order.
为了保留曲目的顺序，所以曲目列表是一个序列。
3
This has turned the three hours of practice on Grand Prix Fridays into highly valuable track time, as it is now teams' only real opportunity to track test in-season developments.