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The M4 combination warning & driving light is a unique solution whereby the white LED's are interleaved with with the colored warning LED's. This way the entire light is energized in both driving and in warning mode. Another unique feature is the automatic switch from driving mode to warning mode without any user intervention. While driving with the white LED's energized, as soon as you flip the switch to run code, the flashing warning signal overrides the steady burn white driving lights.