A multi-layer composite laminate composition comprising: a substrate layer and an overlay layer that are both bonded to at least one adjacent layer in a multi-layer composite laminate composition; the substrate layer being a thermoformable material having a material formulation that includes a polycarbonate homopolymer or copolymer; the overlay layer being a thermoformable material having a material formulation that includes an ingredient selected from the group consisting of PVC, PVC alloy, acrylic, polyurethane, acrylonitrile butadiene styrene, and combinations thereof; the multi-layer composite laminate composition having the following performance characteristics: flammability: the composite laminate being compliant with FAR 25-853(a) (i)60- second vertical burn, wherein 60-second vertical burn average burn length does not exceed 150 mm (6 inches), average after flame time does not exceed 15 seconds and average after flame drip time does not exceed 3 seconds; flammability: the composite laminate being compliant with FAR 25-853 (a) (ii) of 12-second vertical burn, wherein 12-second vertical burn average burn length does not exceed 200 mm (8 inches), average after flame time does not exceed 15 seconds and average after- flame drip time does not exceed 5 seconds; specific optical smoke density: using an NBS smoke chamber, the average peak smoke density within 4 minutes is equal to or less than 200 as regulated by FAR 25-853(d); specific optical smoke density: using an NBS smoke chamber, the average peak composite-material smoke density within 4 minutes is equal to or less than 150 as regulated by airbus ABD0031/ATS1000; toxicity of burning gas: composite-material smoke extracted from NBS smoke chamber and measured by Draeger tube has an average concentration (in parts per million, ppm) of the following gas components: HF<100ppm, HCl<150ppm, HCN<150ppm, S02/H2S<100ppm, NO/NO2<100ppm, and CO<1000ppm; heat release and heat release rate: as measured by OSU heat release tester, the total 2-minute heat release and heat release rate does not exceed 65KW-min/m2 and 65 KW/m2, respectively regulated by FAR 25-853(d); characterized in that the substrate layer has a material formulation comprising poly(oxycarbonyloxy-1,4-phenylene-isopropylidine) polycarbonate. a substrate layer and an overlay layer that are both bonded to at least one adjacent layer in a multi-layer composite laminate composition; the substrate layer being a thermoformable material having a material formulation that includes a polycarbonate homopolymer or copolymer; the overlay layer being a thermoformable material having a material formulation that includes an ingredient selected from the group consisting of PVC, PVC alloy, acrylic, polyurethane, acrylonitrile butadiene styrene, and combinations thereof; the multi-layer composite laminate composition having the following performance characteristics: flammability: the composite laminate being compliant with FAR 25-853(a) (i)60- second vertical burn, wherein 60-second vertical burn average burn length does not exceed 150 mm (6 inches), average after flame time does not exceed 15 seconds and average after flame drip time does not exceed 3 seconds; flammability: the composite laminate being compliant with FAR 25-853 (a) (ii) of 12-second vertical burn, wherein 12-second vertical burn average burn length does not exceed 200 mm (8 inches), average after flame time does not exceed 15 seconds and average after- flame drip time does not exceed 5 seconds; specific optical smoke density: using an NBS smoke chamber, the average peak smoke density within 4 minutes is equal to or less than 200 as regulated by FAR 25-853(d); specific optical smoke density: using an NBS smoke chamber, the average peak composite-material smoke density within 4 minutes is equal to or less than 150 as regulated by airbus ABD0031/ATS1000; toxicity of burning gas: composite-material smoke extracted from NBS smoke chamber and measured by Draeger tube has an average concentration (in parts per million, ppm) of the following gas components: HF<100ppm, HCl<150ppm, HCN<150ppm, S02/H2S<100ppm, NO/NO2<100ppm, and CO<1000ppm; heat release and heat release rate: as measured by OSU heat release tester, the total 2-minute heat release and heat release rate does not exceed 65KW-min/m2 and 65 KW/m2, respectively regulated by FAR 25-853(d); characterized in that the substrate layer has a material formulation comprising poly(oxycarbonyloxy-1,4-phenylene-isopropylidine) polycarbonate.