 Under an agreement with the FMSR, the Johor state government participated in the development of the FMSR line by forming Johore Railway (JR), which undertook the construction of the Johor segment of the mainline from its boundary with Negeri Sembilan to Johor Bahru, before allowing itself to be absorbed into the FMSR in 1912.While Johor received FMSR train services upon completion of the line in 1909, the FMSR line bypassed all urban centres in Muar, leaving the MSR line unconnected to the wider FMSR network.Following the absorption of JR into the FMSR, the MSR remained in service for an additional 17 years before its closure.