PartⅣ　Exercises

1.Read and complete the blanks.

（1）ATO utilizes________information to control train's status，move or stop.

（2）The implement of an ATO system can make a timetable of a metro line more________.

（3）The process of ATO should meet the requirement of________and speed.

（4）Vehicle doors'________and________can be controlled by ATO automatically，or by the driver________.

2.Translate the following passage into Chinese.

Automatic Train Operation（ATO）is an operational safety device used to enhance automatic operations of trains.It was designed and programmed to achieve partial or complete automatic train piloting and driverless function，which is easier to ensure safety of human on urban rail transit.

The basic requirement of ATO is to tell train approaching a station where to stop so that the complete train is in the platform.This is assuming that the ATP has confirmed that line is clear.Furthermore，because of the dynamic and accurate on-board braking curve calculation，ATO can achieve±0.15 meters stop accuracy.