1. License Plate Technology “Design for Camera Readability”
Brent James – AVI Business Manager
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3 Traffic Safety Systems Division

2. Automated Enforcement Applications
Cash Cash & Electronic All Electronic
Automatic
License Plate
Reading (ALPR)
Toll Roads & Police Using ALPR Technology for Enforcement
3 Traffic Safety Systems Division

3. Challenges for License Plate Reading
Plate Design
Fonts & Graphics Variations
Repeated Alpha Numeric
Plate Construction
Embossed vs. Flat Plates
Reflective Properties of Sheeting
Printing Inks
Camera
Illumination Type (white light vs. IR)
OCR Software (regional optimization)
Unique ID = Alpha Numeric + State + Plate Type
3 Traffic Safety Systems Division

4. Cameras See Things Differently
Visible
Light
Images IR
Images
3 Traffic Safety Systems Division

5. Design Plates for Camera Readability
Improved Contrast Ratio
Alphanumeric
Background Graphics
Embedded Identifiers
State / Country
Plate Type
Unique Identifier?
Improved Read Confidence
Self Check e.g. bar codes
Maintain Graphic Design & Improve Camera Readability
3 Traffic Safety Systems Division