Retroreflective vehicle identification articles having improved machine legibility.

摘要

Improved vehicle identification articles, such as license plates or license tabs, employ materials selectively absorptive or transmissive in the near infrared spectrum. The absorptive materials may form non-alphanumeric recognition symbols, alphanumeric characters in addition to the license number, or the license number itself. In preferred embodiments, the symbols are alphanumeric characters chosen from a font more easily read by vehicle identification equipment than other fonts. Retroreflective image analysis systems suitable for use with the articles are described.