Traffic　operation　characteristics　of　the　city　gradually　changed　from　simplicity　to　comprehensiveness.　In　this　paper,　different　influence　of　episodic　events　was　analyzing　from　angle　of　the　students,　commuter,　retirees,　according　to　the　common　accidental　event　types　of　public　traffic.　Combined　with　the　SP　public　small　sample　survey,　different　residents　requirement　on　information　about　type,　location,　prompting　time　was　analyze　and　contingency　information　request　form　was　constructed.　Besides,　the　best　information　publishing　channels　of　different　groups　was　discussed　and　contingency　framework　was　built.　In　addition,　mobile　phone　APP　mobile　terminal　was　developed　and　the　framework　of　information　release　was　constructed.　All　in　all,　the　goal　is　to　solve　the　conflict　between　city　residents　travel　demand　and　travel　information　accessibility,　timeliness,　accuracy,　and　to　improve　transportation　efficiency.