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OCR for page 55
Levels of Classification Site 1A Site for which AVC data are available for periods of at least 1 week for at least 12 consecutive months. 1B AVC site that is reasonably near a Level 1A site on the same road. 2A Site for which an AVC count is available for a period of at least 48 hours. 2B Site for which a manual classification count for a minimum of 6 weekday hours is available. 3A Any other site for which volume counts are available and that is on the same road as a Level 1 or 2 site. 3B Any other volume-count site. 2-55