Abstract: A trailer marker system including side markers and a round marker is disclosed herein. The side markers are to extend along the side of a trailer or trailer vehicle. The side markers are elongated lights, while the round marker is a circular shaped light. The side markers and round marker illuminate the surroundings of a trailer vehicle for increased safety. Importantly, each of the side markers and rear marker include lights that face down towards the roadway. This results in road markings being illuminated as to allow a driver of the trailer vehicles to safely remain on the road. Additionally, the downward facing lights found in the side markers and the rear marker help to eliminate blind spots. Blind spots when making a turn or reversing the trailer are eliminated as they are illuminated in order to allow the driver to be safer when operating the trailer vehicle.