What is the difference between ANSI/ISEA 107-1999 and ANSI/ISEA 107-2004?
ANSI/ISEA 107-1999 was the original high visibility apparel standard and was developed by the ISEA in 1999. In 2004, the standard was revised to include high visibility headwear as a category. Another important change to the standard in 2004 was the prohibiting of any kind of sleeveless garment to be labeled as Class 3 when worn alone. Additionally, all references to classes of garments and their use in specific environments based on vehicle speeds were removed. ANSI/ISEA 107-2004 emphasizes that garment selection should be based on the color and complexity of the work environment, the task load of the worker, separation of the worker from moving equipment and vehicles, and other work environment variables. The revised version also added additional testing procedures and removed those that added no value.
