Western Cullen Hayes makes a variety of Blue Flag Signs for the railroad industry. These signs can be free standing devices or integral parts of other railroad equipment such as derails or switches. Our signs can be clamped to the rail, spiked to the cross ties or driven into the ballast. Western-Cullen-Hayes, Inc. signs are made from 14 gage steel to withstand the rugged service requirements of the railroad industry. All of our Blue Flag Signs meet the requirements of the FRA and OSHA for the protection of workers around or in freight cars and locomotives.