 The rehabilitated at-grade portion of the South Luzon Expressway from Nichols to Alabang and the Metro Manila Skyway System are both operated by the Skyway Operations and Maintenance Corporation (SOMCo), a company of the existing PNCC concession holder, and Citra Metro Manila Tollways Corporation.SOMCo took over the operations and maintenance of the Skyway from the former operator, PNCC Skyway Corporation, effective January 2008 and was established in compliance with the provisions stipulated in the July 2007 Amended Supplemental Toll Operators Agreement (A-STOA) between the PNCC, Citra Metro Manila Tollways Corporation, and the Toll Regulatory Board (TRB), which awarded the management of the 35-kilometer toll road to Citra.Skyway used the using Vendeka toll collection system.