Whether you're upgrading your current TollTag or joining the TollTag community, your Dallas Cowboys TollTag is easy to activate to help you rep the Cowboys and save on tolls.1. Activate your Dallas Cowboys TollTag - Call the North Texas Tollway Authority at 972-818-6882 to activate your new TollTag or open a TollTag account if you do not already have one. 2. Remove your old TollTag - Removing the old TollTag sticker will make it inoperable, so it cannot be reused on another vehicle. 3. Install the Dallas Cowboys TollTag on your windshield.