Stability Test - Unladen : The unladen truck should not slide down or turn over for 30 seconds when it was on the platform, which is rising in any single side in 30 degrees.
A " brake man" pushes the sled at the beginning of a race and then stops it – with brakes -- after it crosses the finish line. Brake men do not steer or drive the sled.
放置于
查台上，拉紧手刹
得滑动或翻落。
人物志
后在它越过终点线后用
舵或驾驶雪橇。
