Taillight/headlight displays: Panels attached to tail area of public transit buses or posters affixed to the front end of public buses between headlights.

Target audience: Profile of the most desired or most likely customers for a specific product or service. Defined by demographic and lifestyle characteristics including brand or media consumption, purchase behavior etc.

Taxi-displays/taxi tops: Advertising structures affixed to taxicabs, either on roof or on rear. Roof panels are called taxi tops and generally are backlit at night.

Traffic Audit Bureau (TAB) for media measurement: A non profit organization that audits outdoor media structures as well as other outdoor media as a third party, independent source. It measures all outdoor media vehicles and number of people that they reach.

Traffic count: The number of potential customers passing an outdoor media display during a specific time period. Used by TAB to authenticate the potential exposure of outdoor media structures.

Traffic flow: A graphic presentation of the traffic volume along any system of streets, arteries or highways. Indicated by width of lanes, which represent the amount of traffic carried.

Transit advertising: Those outdoor media advertisements that appear on the exterior or interior of public transportation vehicles or stations.

Transit shelter display: Advertising panels that are integral part of a freestanding covered structure located at bus stops. Most are backlit and offer 24-hour illumination.

Traveling displays: Posters used on the sides or buses or moving vehicles, available in a variety of sizes.

Trestles: Displays attached to overhead railroad bridges providing large size, head-on visibility to traffic.

Tri-vision: An outdoor media structure (usually bulletin size) where, through the use of rotating triangular louvers, copy for three different advertisers can be displayed in sequence.