What is ANSI/ISEA?

ANSI, American National Standards Institute, and ISEA, International Safety Equipment Association, jointly developed a standard for high-visibility clothing. ANSI and ISEA are not government agencies, so this standard is a suggested standard for everyone to adopt on his/her own. Many states have already adopted or are looking into the standard or some variations of it.

ANSI/ISEA 107
ANSI/ISEA 107-2004 guidelines are divided into 3 classes according to the level of risk present in the working environment:

Class 1:
Lower visibility requirements for workers who are? well?separated from traffic.
* traffic speeds under 25 mph
* Parking lot and warehouse environment
Class 2:
Medium visibility requirements for workers who are on and /or near roadways.
* traffic speeds from 25 to 50 mph
* Higher traffic levels or more congestion than class 1
* Workers in urban/suburban areas including road construction, utility and survey crews, EMS workers, traffic police, railway workers, school crossing guards and airport ground crews.
Class 3:
Highest visibility requirements for workers in high-risk situations who need to be visible through a full range of body motions from a minimum distance of 1,280 feet.
traffic speeds over 50 mph
* Workers on highways/freeways including road construction and maintenance , utility and survey crews, EMS & railway workers.

Class 1-minimum Requirement
visible background	217 square inches
visible reflective	155 square inches
minimum reflective width	1 inch
Class 2-minimum Requirement
visible background	755 square inches
visible reflective	201 square inches
minimum reflective width	1.375 inches
Class 3-minimum Requirement
visible background	1240 square inches
visible reflective	310 square inches
minimum reflective width	2 inches