An optical article that exhibits: a uniform first percent transmittance when said optical article is tested in the Outdoor Test, a gradient second percent transmittance when said optical article is tested in the Behind the Windshield Test, the tests being those described in Part 4 of the section Examples in the description, and a uniform third percent transmittance when said optical article is free of exposure to actinic radiation, wherein said uniform first percent transmittance is less than said uniform third percent transmittance, the optical article comprising: (a) a substrate; (b) a first layer positioned over at least a portion of said substrate, said first layer comprising a first photochromic material having a first unactivated state terminal minimum absorbance wavelength; and (c) a second layer positioned over at least a portion of said first layer, said second layer comprising a second photochromic material having a second unactivated state terminal minimum absorbance wavelength, wherein said second unactivated state terminal minimum absorbance wavelength is less than said first unactivated state terminal minimum absorbance wavelength, and wherein said first layer provides said gradient second percent transmittance when said photochromic article is tested in the Behind the Windshield Test, and said second layer provides said uniform first percent transmittance when said photochromic article is tested in the Outdoor Test. a uniform first percent transmittance when said optical article is tested in the Outdoor Test, a gradient second percent transmittance when said optical article is tested in the Behind the Windshield Test, the tests being those described in Part 4 of the section Examples in the description, and a uniform third percent transmittance when said optical article is free of exposure to actinic radiation, wherein said uniform first percent transmittance is less than said uniform third percent transmittance, the optical article comprising: (a) a substrate; (b) a first layer positioned over at least a portion of said substrate, said first layer comprising a first photochromic material having a first unactivated state terminal minimum absorbance wavelength; and (c) a second layer positioned over at least a portion of said first layer, said second layer comprising a second photochromic material having a second unactivated state terminal minimum absorbance wavelength, (a) a substrate; (b) a first layer positioned over at least a portion of said substrate, said first layer comprising a first photochromic material having a first unactivated state terminal minimum absorbance wavelength; and (c) a second layer positioned over at least a portion of said first layer, said second layer comprising a second photochromic material having a second unactivated state terminal minimum absorbance wavelength, wherein said second unactivated state terminal minimum absorbance wavelength is less than said first unactivated state terminal minimum absorbance wavelength, and wherein said first layer provides said gradient second percent transmittance when said photochromic article is tested in the Behind the Windshield Test, and said second layer provides said uniform first percent transmittance when said photochromic article is tested in the Outdoor Test.