Initialism for Responsible Service of Alcohol, an Australian qualification and permit.

“Responsible Service of Alcohol”的缩写，澳大利亚的资格与许可。

Initialism for runway safety area, a prepared zone beside a runway.

跑道安全区的缩写，跑道旁的整备安全区域。

Initialism for recreational sea angler, a noncommercial marine sport fisher.

海上休闲垂钓者的缩写，非商业性垂钓者。

Initialism for road safety authority, a national agency for road safety.

道路安全主管机构的缩写，某些国家的政府机构。