Spur Track Guardian foot operated sign holder with solar light features a "Mouse Trap" design. Includes a blue 12-inch by 15-inch, 0.080 aluminum sign plate. Solar powered flashing blue light. Shock-proof and weather-tight. Gravity switch activates light when sign holder is at 45 degree angle or greater. Brilliant 6-LED light visible for over a mile. Lag screws and washers included to attach to timber, or resin ties. Choice of sign plate wording: STOP, STOP - Men at Work, STOP Tank Car Connected, STOP Crew at Work, STOP Car Connected, STOP Employees Working, DERAIL. Weight: 25 pounds. Product of Aldon® Company