How to apply RFID in SLEX?

Could you elaborate on the potential applications of RFID technology in the South Luzon Expressway (SLEX)? How could it enhance traffic management, toll collection, or even safety measures along the highway? Are there any challenges or limitations to implementing RFID in SLEX that need to be addressed? What are some of the steps required to successfully integrate RFID into SLEX's operations? Additionally, how would RFID technology benefit commuters and the transportation industry as a whole in the context of SLEX?