Photographer Lucas Zimmermann’s long exposure photos of traffic lights in the fog are mesmerizing.   

The images appear as part two of the German fine art photographer’s Traffic Light series. 

“The unknown hue of blueish light is hidden for the human eye, but the photography shows us things we otherwise overlook, such as a simple traffic light on the street. An all known object which produces a strong graphical effect in an unnatural situation with a simple photographic setup,” writes Zimmerman. 

Simple yet beautiful, Zimmerman exposes the rainbows that hide in the dense mist at night, turning traffic lights into art.