Variable　speed　limit　(VSL)　control　is　a　widely　adopted　speed　management　system　to　improve　freeway　operations　performance.　Most　previous　research　has　focused　on　one　isolated　aspect　of　its　contribution.　In　this　study,　the　performance　of　various　VSL　control　strategies　was　compared　as　a　combination　of　the　following　aspects:　mobility,　safety,　and　environmental　impacts.　The　control　strategies　to　be　evaluated　were　selected　from　both　state-of-the-art　and　practice,　including　the　decision　tree-based　VSL　control　strategy　algorithm,　cell　transmission　model　(CTM),　and　the　METANET　model,　both　based　on　VSL　control　strategy.　The　microscopic　traffic　simulation　software　VISSIM　was　adopted　to　establish　an　experimental　traffic　network　based　on　field　data.　In　results　analysis,　network-wide　traffic　performance　implementing　selected　control　strategies　were　compared　to　the　scenario　without　VSL　control　to　evaluate　the　control　benefits　in　mobility,　safety,　and　environmental　impacts.　©　2018　American　Society　of　Civil　Engineers.