With Light Emitting Diode (LED) lighting technology replacing now outdated methods of lighting, the question of what color temperature to make these new LED’s arises. Currently, roadways are lit by either High Pressure Sodium or Metal Halide lamps, each with distinct luminous qualities. High Pressure Sodium lamps emit a warm orange glow whereas Metal Halide lamps provide a much cooler white light. With limited research detailing whether one color temperature would be advantageous in promoting road safety, concluding which color temperature LED’s should be designed to emit is critical. By inventing a testing Apparatus capable of measuring reaction times in a simulated driving environment, I conclude that the colder color temperature of Metal Halide lamps promotes a faster reaction time over High Pressure Sodium lamps as well as decreasing the likelihood that drivers will space out and lose focus, further increasing the safety of colder color temperature for lighting for roadways.