alignment revisions due to right-of-way issues. This part is two lanes per direction (with possible expansion to 3–4 lanes). The expressway is expected to partially open in 2023. Toll Road 5 The South Luzon Expressway Toll Road 5, also referred to as Toll Road 5 (TR5), will be the extension of South Luzon Expressway from Mayao, Lucena to the vicinity of Port of Matnog in Matnog, Sorsogon. The total length of the extension would be approximately . It will be four-lane divided toll road with 28 interchanges and eight segments. It aims to decongest Andaya Highway and Pan-Philippine Highway, cut travel time from Manila to Naga by two to three hours, and to Matnog by six hours. On June 29, 2020, the Toll Regulatory Board issued a resolution to declare this project a Toll Road upon the request of, and based on the proposal submitted by the joint venture (JV) of the Philippine National Construction Corporation (PNCC) and San Miguel Holdings Corporation (SMHC). On August 25, 2020, San Miguel Corporation thru South Luzon Toll Road 5 Expressway Inc. announced they will invest this project alongside the Pasig River Expressway with a cost of in order to boost the economy in Luzon. This project is separate from Quezon–Bicol Expressway, another proposed expressway between Quezon and Bicol Region. On June 3, 2022, the Department of Transportation and San Miguel Corporation have signed a Supplemental Toll Operations Agreement (STOA) for SLEX Toll Road 5 which was approved by then President Rodrigo Duterte 24 days later. Other future plans Other planned expansion projects in the SMC–PNCC joint venture pipeline with connections to either SLEX and the Skyway system include: Toll Previously employing closed and barrier toll systems, the South Luzon Expressway fully employs a closed road system, wherein the toll fee is charged based on vehicle class and the kilometers travelled from the entry to exit point. The expressway's toll system is integrated with the South Metro Manila Skyway Project and Muntinlupa–Cavite Expressway (MCX). Toll collection is done upon exit at either SLEX, STAR Tollway, or MCX or at Skyway Main toll plaza. However, the expressway's sections between Magallanes and Sales Interchanges and between Calamba and Ayala Greenfield toll plazas are toll-free. , the expressway fully implements an electronic toll collection (ETC) system, the Autosweep RFID, using RFID technology, and the system formerly used "E-Pass", which uses transponder technology. The ETC system is shared