Yadi na marshalling, wanda kuma aka sani da filin rarrabawa, filin jirgin kasa ne inda ake raba jiragen kasa zuwa motoci guda ɗaya ko rukuni na motoci bisa la'akari da inda suke ko wasu halaye, kamar abubuwan da ke ciki ko nauyi. A cikin filin jirgin ruwa, ana karkasa jiragen ƙasa zuwa ƙananan ƙungiyoyin motoci, sannan a sake haɗa waɗannan motocin zuwa cikin sabbin jiragen ƙasa waɗanda aka tsara ta hanyar ƙarshe. Wannan tsari ana kiransa da rarrabuwa ko marshalling, kuma yana ba da damar yin tafiya mai inganci ta hanyar tabbatar da cewa an haɗa motoci wuri ɗaya gwargwadon inda aka nufa.