Class 1
Class 2
Class 3
Conspicuity Class Class 1 Class 2 Class 3
Levels of Visibility Good Better Best
Work Examples
  • Vehicle Operators
  • Parking Lot Workers
  • Warehouse Workers
  • Sidewalk Maintenance
  • Workers
  • Delivery Vehicle
  • Drivers
  • Road Construction
  • Utility Workers
  • Surveyors
  • Railway Workers
  • Forestry Workers
  • School Crossing Guards
  • Toll Booth Guards
  • Airport Baggage and Ground Crews
  • Emergency Response
  • Law Enforcement
  • Accident Site Investigators
  • Road Construction
  • Utility Workers
  • Surveyors
  • Emergency Response
  • Flaggers
Attentiveness Traffic Speeds Able to give full and undivided attention to oncoming traffic. Performing tasks that divert attention away from approaching traffic. Performing high task loads in dangerous proximity to approaching traffic.
Traffic Proximity Less than 25 MPH 25-50 MPH More than 50 MPH
Minimum High-Visibility Material Coverage 217 Square-inches 775 Square-inches 1240 Square-inches

ANSI/ISEA 107-2004 Overview:

ANSI/ISEA 107-2004 was developed to protect workers who are exposed to low visibility hazards.