By choosing a vest which is above what is generally necessary, you will ensure the safety of your employees and help to make them as secure in their job as possible. Even an ANSI class 3 surveyors vest can provide you with an abundance of visibility, typically with some additional options that will rate them for breakaway material.
The need for a safety ANSI class 2 vest for their job would include individuals who are working when the weather conditions are poor and visibility may be low. These are also generally preferred for when traffic near the worker will exceed 25 mph. Some of the most popular professions which use these types of vests would include airport ground workers, law enforcement officials, railroad workers and crossing guards.