基本上完全沒有動用到15.3，因為48.13就可以解決掉了，
15.3只是RedBull的Arguments裡面的其中一點。
48.13原文是這樣
When the clerk of the course decides it is safe to call in the safety car
the message "SAFETY CAR IN THIS LAP" will be sent to all Competitors via
the official messaging system and the car's orange lights will be
extinguished. This will be the signal to the Competitors and drivers that
it will be entering the pit lane at the end of that lap.
"Will be"表示只要"Safety car in this lap"的訊息亮起，
safety car就必須要進pit lane了
用48.12來爭也未必合理，因為48.12的重點應是在第一段
"If the clerk of the course considers it safe to do so, and the message
'lapped cars may now overtake' has been sent to all competitors via the
official messaging system, any cars that have been lapped by the leader
will be required to pass the cars on the lead lap and the safety car."
Merc覺得有爭議的一段，原文是這樣
Unless the clerk of the course considers the presence of the safety car
is still necessary, once the last lapped car has passed the leader the
safety car will return to the pits at the end of the following lap.
這段的意思是在說Clerk有權力去判斷場上是否安全，否則可以把safety car留在場上，
重點並不是套圈車過了還要過一圈safety car才可以進去。
所以基本上這條是為了讓套圈車超過安全車而存在的。
不是在說safety car要帶完多少圈才能進pit lane。
就很像棒球規則啦，好球帶規則是
the area over home plate from the midpoint between a batter's shoulders
and the top of the uniform pants