There are several types of solar signs. Some industrial sites use plant turnaround signs that help prevent accidents and improve traffic flow. A solar powered stop sign through an industrial area or other work area can help to keep it accident free. There are many signs such as the high voltage area sign, overhead crane, and toxic vapor warnings, caution signs for equipment, which warn workers of these potential dangers.    These signs are used in petrochemical, industrial, and commercial areas to prevent workers from getting into different types of accidents on the job. These signs are made for industrial use, and are made to DOT specifications and OSHA requirements.  There are other advantages to these safety signs. They don’t require maintenance like signs powered through electric cables. It keeps costs down because these signs don’t need expensive cables and they minimize roadwork, therefore, saving the company money. They are resistant to wind and hail; they utilize temperature compensation.  All of these safety signs are keeping the work place safe because they warn of potential danger to the employees. Their source of power is much safer than traditional flashing signs. If there are any cables that could fall or become frayed or any other way that could cause a worker to get electrocuted. The flashing traffic signs throughout a plant site are a safer way to conduct traffic through and keep accidents down. They will help to make the work place safer on sunny, foggy, and cloudy days. On top of it, hey flash day and night, 24 hours a day to keep workers safe.