Patent ID: 8308318

Claim:
A method of generating street light, the method comprising: utilizing a sensor disposed in signal communication with a controller to determine whether a critical time period exists, the critical time period being when a vehicle approaches a roadway intersection; determining whether a non-critical time period exists utilizing a controller, the non-critical time period being a time period other than the critical time period; if the controller determines that a non-critical time period exists, then energizing one or more first light emitting elements thereby generating primary illumination of a first wavelength range over a target area of the street utilizing the controller, the first wavelength range extending from 560 nm to 610 nm; and if the controller via the sensor has determined that a critical period exists, then both energizing one or more second light emitting elements thereby generating secondary illumination of a second wavelength range toward the target area of the street, the second wavelength range extending from either 500 nm to 550 nm or from 610 nm to 660 nm, and energizing the one or more first light emitting elements thereby generating the primary illumination of the first wavelength range over the target area utilizing the controller, such that both the primary illumination and the secondary illumination are combined within at least a portion of the target area of the street thereby enhancing at least one visual property within the at least a portion of the target area of the street during the critical time period.