The　objective　of　this　paper　is　to　explore　the　effects　of　longitudinal　speed　reduction　markings　(LSRMs)　on　vehicle　maneuvering　and　drivers＇　operation　performance　on　interchange　connectors　with　different　radii.　Empirical　data　were　collected　in　a　driving　simulator.　Indicators-relative　speed　change,　standard　deviation　of　acceleration,　and　gas/brake　pedal　power-were　proposed　to　characterize　driving　behavior.　Statistical　results　revealed　that　LSRMs　could　reduce　vehicles＇　travel　speed　and　limit　drivers＇　willingness　to　increase　speed　in　the　entire　connector.　To　probe　the　impacts　of　LSRMs,　the　connecter　was　split　into　four　even　sections.　Effects　of　LSRMs　on　driving　behavior　were　stronger　in　the　second　and　the　final　sections　of　connectors.　LSRMs　also　enhanced　drivers＇　adaptability　in　the　first　three　quarters　of　a　connector　when　the　radius　was　50　m.　Drivers＇　gas　pedal　operation　would　be　impacted　by　LSRMs　in　the　entire　connector　when　the　radius　was　50　m.　LSRMs　could　only　make　drivers　press　brake　pedal　more　frequently　in　the　second　section　with　80　m　and　100　m　radius.　In　the　second　quarter　section　of　a　connector-from　the　FQP　(the　first　quartile　point)　to　the　MC　(the　middle　point　of　curve)-LSRMs　have　better　effects　on　influencing　vehicle　maneuvering　and　drivers＇　operation　performance.