Abstract: A portable lighted arrow sign for removable attachment to a surface of a vehicle is provided. The magnetic plate member has a plurality of light emitting diodes as illuminated members configured to display the shape of the arrow, which directs oncoming traffic away from the vehicle when the magnetic plate member is magnetically connected the surface of the vehicle. The magnetic plate member is characterized as portable in size and configured to be grasped by a user's hand, to maneuver and position the lighted arrow sign upon the surface of the vehicle. The portable lighted arrow sign is preferably characterized as having a length sufficient to extend laterally outwardly from the vehicle in the form of a cantilever, to provide improved warning and direction to oncoming traffic.