 The resultant flows are determined by the interaction between the two inlet flows, influenced by the physical characteristics of the intersection that cause drivers to merge in a defined manner.This merging process can be defined by split priority, p, which is the ratio of μ2* to μ1* (p = μ2* / μ1*).A common split priority rule is the "zipper rule", which describes two flows merging where vehicles merging alternate between the two input streams.