Limited　by　the　low-frequency　data　acquisition,　vehicle　global　positioning　system　(GPS)　data　are　difficult　to　implement　in　the　area　of　microtraffic　simulation.　Based　on　the　functional　design　of　mobile　phone　positioning　technology,　mobile　phones　can　be　used　to　acquire　bus　GPS　data　every　second.　In　this　paper,　an　analytical　model　is　proposed　to　determine　the　parameters　of　signal　coordination　for　bus　priority　along　an　arterial　based　on　GPS　data　of　mobile　phones.　First,　bus　priority　evaluation　indicators　are　established　using　bus　GPS　data,　which　are　acquired　by　mobile　phones.　Second,　the　signal　timing　parameters　of　the　arterial　road　are　optimized,　and　a　preliminary　timing　plan　is　developed　by　evaluating　small　changes　in　the　plan.　Finally,　the　corresponding　final　plan　is　developed　using　VISSIM　micro　simulation　software.　The　feasibility　of　the　analytical　model　is　verified　by　simulating　an　actual　arterial　in　Fuzhou　city,　China.