▁firm ly ▁defined ▁code ▁of ▁corpor ate ▁eth ics . ▁ ▁T oll Tag ▁ ▁T oll Tag ▁is ▁the ▁electronic ▁to ll ▁collection ▁system ▁used ▁by ▁the ▁N T TA ▁in ▁the ▁Dallas ▁/ ▁Fort ▁W orth ▁met ro ▁area . ▁It ▁was ▁North ▁America ’ s ▁first ▁electronic ▁to ll ▁collection ▁system ▁when ▁it ▁was ▁installed ▁on ▁the ▁Dallas ▁North ▁T oll way ▁in ▁ 1 9 8 9 . ▁There ▁are ▁currently ▁over ▁ 4 ▁million ▁T oll Tags ▁in ▁operation ▁in ▁the ▁North ▁Texas ▁area . ▁The ▁N T TA ▁offers ▁reduced ▁to ll ▁rates ▁for ▁T oll Tag ▁users ▁at ▁all ▁to ll ▁points . ▁ ▁T oll Tags ▁can ▁be ▁used ▁on ▁all ▁of ▁the ▁road ways ▁of ▁the ▁N T TA , ▁and ▁they ▁can ▁also ▁be ▁used ▁on ▁any ▁other ▁to ll ▁road ▁in ▁the ▁state ▁of ▁Texas ▁as ▁well ▁as ▁for ▁some ▁par king ▁lots ▁in ▁dow nt own ▁Dallas ▁for ▁par king ▁or ▁to ll ▁payment ▁at ▁the ▁Dallas / F ort ▁W orth ▁International ▁Airport ▁( DF W ), ▁and ▁at ▁Dallas ▁Love ▁Field ▁Airport ▁( D AL ). ▁Current ▁T oll Tags ▁are ▁small ▁stick ers , ▁similar ▁to ▁those ▁used ▁for ▁state ▁ins pe ctions ▁and ▁auto ▁registr ations , ▁but ▁cannot ▁be ▁moved ▁between ▁vehicles . ▁The ▁previous ▁T oll Tag ▁was ▁a ▁hard ▁case ▁tag ▁which ▁was ▁aff ixed ▁to ▁the ▁wind sh ield ▁using ▁vel cro ▁tags ; ▁these ▁tags ▁are ▁still ▁valid ▁and ▁can ▁be ▁moved