Ramp　is　an　important　part　of　the　interchange.　The　ramp　design　concept　based　on　the　running　speed　is　a　new　design　idea　of　the　highway　and　interchange.　By　analysis　of　the　influence　factors　of　the　interchange　ramp　running　speed,　this　paper　formulates　the　orthogonal　experiment,　and　collects　14　ramps,　in　total　of　147　groups　of　the　running　speed　as　the　samples,　and　then　analyzes　the　characteristics　of　the　running　speed　of　the　vehicles　on　interchange　ramp.　According　to　the　change　trend　of　the　running　speed,　the　ramp　is　divided　into　three　sections:　deceleration　section,　uniform　section,　acceleration　section.　This　paper　mainly　analyzes　the　relationship　between　the　interchange　ramp　running　speed　of　the　three　sections　and　the　influence　factors;　and　then　this　paper　builds　the　interchange　ramp　running　speed　prediction　model　of　the　three　sections.　At　last,　correlation　test　will　be　validated,　and　verify　the　applicability　of　the　model.　(C)　2014　Published　by　Elsevier　Ltd.