Due to the effectiveness and safety when washing, these mobile type washing units have become quite generalized and practiced around the world. As of 1985, there were quite a few number of countries, that still till this day, use mobile washing systems. These countries are: Argentina, Barbados, Canada, Chile, Colombia, Costa Rica, Egypt, Iraq, Iran, India, Japan, Libya, Mexico, Panama, Peru, Russia, Saudi Arabia, Syria, Thailand, Taiwan, United Arab Emirates, United States, Venezuela and Yemen. In the last 30 years, many additional countries have adopted the method of using mobile washing units in the maintenance of their network. Hence, it is safe to say that mobile washers are a necessary part of a reliable and effective live line maintenance program.