This　paper　investigated　the　questions　existing　in　public　transit　system　of　big　cities　such　as　low　speed,　unpunctuality　etc,　and　the　current　situation　on　energy　tension,　the　urban　environment　deterioration　and　the　soil　resource　scarcity　is　also　analyzed.　Then　based　on　the　idea　of　multi-mode　transport,　a　new　trip　mode　of　urban　traffic　is　put　forward:　Rapid　Transit　System　&　Bicycle　System　(R&B,　abbr.).　The　current　car　development　policy　in　some　cities　should　be　reconsidered　according　to　the　actual　situation　nowadays.　Moreover,　the　implementation　of　R&B　trip　mode　is　significant　to　reduce　energy,　resource　consumption　and　environment　contamination;　furthermore　it　is　important　to　build　an　integrated　urban　traffic　system　on　primary　of　public　traffic　and　to　keep　the　harmonious　development　of　all　the　industries.