Several common problems often present themselves immediately after a mass casualty incident (MCI), such as the lack of medical resources (ambulances, medical staff, and medical equipment), low accessibility and absence of priority roads for ambulances. Yet at the same time, patient prognoses are significantly underpinned by the ability of medical staff to swiftly identify and transport priority patients to hospitals. This study focuses on the 2015 Formosa Fun Coast Dust Burning incident in terms of patient transportation to and between hospitals. In terms of sudden mass casualty incidents (SMCIs), those requiring longer processing time should be addressed by regional disaster medical assistant teams (RDMATs) while those requiring shorter processing time can be excluded from the EMRC. This study also suggests the inclusion of RDMAT management and area assignment to RDMATs so that they can provide on-site assistance and transport patients to the right hospitals that reflect the patient priority mechanisms in responsibility hospitals of first aid. This can also help build a system between the fire department, health department and hospitals for the betterment of MCI relief efforts.