ANSI

American National Standard for High-Visibility Safety Apparel and Headwear  pdfREAD ABOUT ANSI - ISEA 107-2004

Conspicuity Class 1
Conspicuity level for use in occupational activities which:
1. permit full and undivided attention to approaching traffic;
2. provide ample separation of the pedestrian worker from conflicting vehicle traffic;
3. those exposed to the hazards of warehouse equipment traffic;
4. roadside "right-of-way" or sidewalk maintenance workers; and
5. delivery vehicle drivers.
Examples of pedestrian workers who could work in this class may include :
1. workers directing vehicle operators to parking/service locations;
2. workers retrieving shopping carts from parking areas;
3. those exposed to the hazards of warehouse equipment traffic;
4. roadside "right-of-way" or sidewalk maintenance workers; and
5. delivery vehicle drivers.

Conspicuity Class 2
Conspicuity level for use in occupational activities where risk levels exceeding those in Class 1, such as where:
1. greater visibility is desired during inclement weather conditions;
2. complex backgrounds are present;
3. employees are performing tasks which divert attention from approaching vehicle traffic;
4. work activities take place in or in near proximity to vehicle traffic.
Examples of pedestrian workers in this class may include :
1. roadway construction workers;
2. utility workers;
3. survey crews;
4. railway workers;
5. forestry workers;
6. school crossing guard;
7. parking and/or toll gate personnel;
8. airport baggage handlers/ground crew;
9. emergency response personnel; and
10. law enforcement personnel; and
11. accident site investigators.

Conspicuity Class 3
Conspicuity level for use in occupational activities where risks exceed those in Class 2, such as where:
1. the pedestrian worker and vehicle operator have high task loads, clearly placing the pedestrian worker in danger; or
2. the wearer must be conspicuous through the full range of body motions at a minimum of 390 m (1280 feet), and must be identifiable as a person.
Examples of workers in this class may include :
1. roadway construction personnel;
2. utility workers;
3. survey crews;
4. emergency response personnel; and
5. flagging crews.

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