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OCR for page 54
Glossary AADT Annual average daily traffic. AADTi Annual average daily traffic for vehicle class i. AADTT Annual average daily truck traffic (all classes, combined). AEPV Average ESALs per vehicle. ATR Automatic traffic recorder. AVC Automatic vehicle classifier. DDF Directional distribution factor. DOW Day-of-week. ESALs (18,000-pound) equivalent single-axle loads. HDF Hourly distribution factor. LDF Lane distribution factor. MADW Monthly average days of the week. TOD Time-of-day. TTC Truck traffic classification. TWRG Truck weight road group. VC Vehicle class. WIM Weigh-in-motion. 2-54