In　a　competitive　two-mode　network,　this　paper　aims　at　exploring　the　effect　of　the　uniform　travel　credit　scheme　on　modal　split　and　Pareto　-　improving　property　considering　the　heterogeneous　VOT　of　users.　Under　the　uniform　travel　credit　scheme,　the　government　initially　issues　a　total　amount　of　credits　and　distributes　them　to　each　eligible　user　in　a　uniform　manner,　which　are　allowed　to　trade　in　a　competitive　market.　Therefore,　travelers　can　buy　or　sell　their　credits　according　to　their　own　travel　need.　An　amount　of　uniform　credits　are　charged　for　usage　of　highway　bottleneck　according　to　the　pre-defined　credit　charging　scales.　The　results　show　that　the　uniform　travel　credit　scheme　always　makes　some　auto　users　transfer　to　transit　mode　to　some　extent,　and　the　Pareto-improving　property　is　always　true　for　the　homogeneous　case　whatever　the　credit　charging　scale　is.　However,　for　the　heterogeneous　case,　the　study　shows　that　Pareto-improving　property　only　satisfies　when　the　credits　charged　at　bottleneck　are　less　than　a　critical　value.