For　travelers　with　continuously　distributed　value　of　time　(VOT)　in　a　general　transportation　network,　the　user　equilibrium　(UE)　model　and　system　optimization　(SO)　model　can　be　depicted　either　in　time　units　or　cost　units.　Under　the　condition　of　road　pricing,　the　equivalent　conditions　between　the　UE　flow　pattern　and　the　SO　flow　pattern　are　given.　Furthermore,　we　adopt　a　bi-objective　minimization　model　with　fixed　travel　demand,　and　identify　the　Pareto　optimal　frontier.　Because　users　with　different　VOTs　are　observationally　indistinguishable　and　differential　tolls　on　links　are　difficult　to　implement　in　reality,　we　investigate　a　pricing　scheme　with　anonymous　link　tolls　to　decentralize　a　Pareto　system　optimum　into　user　equilibrium.　©　2012　American　Society　of　Civil　Engineering.