The Commission has adopted a Second Report and Order (Second R&O) in PR Docket No. 92-235 which continues its efforts to develop a strategy for encouraging more efficient use of private land mobile radio (PLMR) spectrum below 800 MHz. In the Report and Order (R&O) in this docket, the Commission concluded that the PLMR bands below 800 MHz should be consolidated and competition should be introduced into the frequency coordination process. This Second R&O consolidates the twenty existing PLMR services into two broad service pools--Public Safety and Industrial/Business--with appropriate provisions for ensuring that the safety of the public will not be compromised. Additionally, the Commission adopts rules to allow centralized trunking, under certain conditions, in the shared bands below 800 MHz and implements a plan for protecting current low power operations in the 450-470 MHz band. Finally, the Commission addresses a Request for Temporary Relief filed by several public safety frequency coordinators.