The plane coordinate system referred to the modified Luzon 1911 Datum and known as ____ replaces PPCS/Luzon1911 as standard under EO 45, 1993.

The plane coordinate system referred to the modified Luzon 1911 Datum and known as ____ replaces PPCS/Luzon1911 as standard under EO 45, 1993.

• A. PPCS/Luzon1911
• B. PPCS/PTM
• C. PPCS/PRS92
• D. PPCS/PRMS

Answer: (C)

Coordinate systems rely on a geodetic datum to model the Earth for converting curved surface measurements to a flat map. In the Philippines, the older plane coordinate system used the Luzon 1911 datum. By EO 45, 1993, the standard was updated to a newer reference framework: the Philippine Plane Coordinate System based on the Philippine Reference System 1992, abbreviated PPCS/PRS92. This change reflects adopting a modern datum that aligns with global GPS networks and provides more consistent, accurate coordinates nationwide. Therefore, the plane coordinate system referred to the modified Luzon 1911 Datum and known as PPCS/PRS92 replaces PPCS/Luzon1911 as the standard under EO 45, 1993.

Coordinate systems rely on a geodetic datum to model the Earth for converting curved surface measurements to a flat map. In the Philippines, the older plane coordinate system used the Luzon 1911 datum. By EO 45, 1993, the standard was updated to a newer reference framework: the Philippine Plane Coordinate System based on the Philippine Reference System 1992, abbreviated PPCS/PRS92. This change reflects adopting a modern datum that aligns with global GPS networks and provides more consistent, accurate coordinates nationwide. Therefore, the plane coordinate system referred to the modified Luzon 1911 Datum and known as PPCS/PRS92 replaces PPCS/Luzon1911 as the standard under EO 45, 1993.