Receipt given to customer while in the toll lane that can show amount paid, date, time, lane, Toll Service Attendant and vehicle classification. The concept of a toll receipt may be extended to that of a monthly statement listing all toll transactions for that period.

TSA. An employee of an operator or other entity who is assigned the duty of collecting tolls from toll facility customers.

See Toll Point.

Also Multi-Lane Free Flow (MLFF) Toll Zone, or ORT Toll Zone. A physical location of an all-electronic toll gantry with ETC and license plate toll technology, support infrastructure and maintenance area. There are no lanes or facilities for cash toll payment.

A time-framed event occurring in the toll lane representing either a cash or electronic toll. The transaction is identified by all or a combination of the following parameters; location, time, date, vehicle class, vehicle ID, toll amount, etc.

Assembly of exchanging information between the Roadside Equipment (RSE) and the On-Board Unit (OBU), which is associated to the passage of a vehicle through an electronic toll collection (ETC) lane. The transaction includes the whole set of required data collecting the toll and clearing the funds.

The in-vehicle device component of a DSRC (or ETC) system. A receiver or transceiver permitting the Operator's Road-Side Unit to communicate with, identify, and conduct an electronic toll transaction. Also called On-Board Unit and Tag.

TSP. A provider of both road transport service and ETC service. Both services may be provided by two different entities: the Road Operator who provides the transport service and the ETC Operator who collects the transit data.

Transportation Research Board  - The Transportation Research Board (TRB) of the National Academies provides leadership in transportation innovation and progress through research and information exchange, conducted within a setting that is objective, interdisciplinary, and multi-modal.  TRB is one of six major divisions of the (US) National Research Council— a private, nonprofit institution that is the principal operating agency of the National Academies in providing services to the government, the public, and the scientific and engineering communities. The National Research Council is jointly administered by the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine.

An axle-counting device, located in the lane and activated by the presence of a tire included as part of an Automatic/Automated Vehicle Classification (AVC) or surveillance system.

Transport Service Provider. A provider of both road transport and ETC service. Both services may be provided by two different entities: the Road Operator who provides the transport service and the ETC operator who collects the transit data.

Traffic and Traveler Information

In the U.S.A.: toll road

Urban Drive Control. Project of 4th framework research: UDC contributes to the integration of traffic management and longitudinal control of vehicles. Driving speed recommendations are sent via short-range communication beacons to vehicles equipped with adaptive distance and speed control.

International Association of Public Transport - UITP is the International Association of Public Transport. UITP advocates sustainable urban mobility, bringing together all public transport stakeholders and all sustainable transport modes, and engaging decision-makers, international organizations and other key stakeholders to promote and mainstream public transport and sustainable mobility solutions.  UITP’s headquarters office is located in Brussels, Belgium and the association counts 11 regional offices around the world.  http://www.uitp.org/vision-mission 

Universal Mobile Telecommunications System

Unione Normatori Italiani. Italian Standardisation body.

An affiliated Italian body to UNI devoted to develop standard for Information Technology.

Uninterruptible Power Supply. A secondary source of power used to maintain system operation in the event that the source of primary power has become disrupted.

Also called road user charges (RUC), urban road pricing consists of direct charges levied for the use of roads, including  tolls, distance or time based fees, congestion charges and charges designed to discourage use of certain classes of vehicle, fuel sources or more polluting vehicles.  These charges may be used primarily for revenue generation, usually for road infrastructure financing, or as a transportation demand management tool to reduce peak hour travel and  associated traffic congestion or other social/environmental  externalities associated with road travel such as air pollution, greenhouse gas emissions, visual intrusion, noise and road accidents. 

United States Department of Transportation.

Any driver driving on a Toll Facility. The User is the holder of an account and On-Board Unit. The User may use the On-Board Unit to pay for tolls or services. In toll collection terms the User may be referred to as the “motorist”.

Payment of a given sum of money that allows the use of a service for a certain time period.

Urban Traffic Control. Network traffic control in urban areas. Utilizes signal controlled intersections in a network in order to optimize the performance of the network according to certain criteria.

Vehicle-Highway Automated Systems - The automated highway system is defined as "a lane or set of lanes where specially equipped cars, trucks and buses could travel together under computer control (Rillings, 1996)." Automated highway systems combine magnetic sensors, computers, digital radio, forward-looking sensors, video cameras, and display technologies.

Also “Congestion Pricing.” Toll facility pricing that is set based on traffic demand, with higher toll rates at high-traffic periods and lower toll rates at low-traffic periods. Rates may vary by time of day, day of the week, or may vary dynamically based on current traffic conditions. Value Pricing is designed to achieve performance objectives to reduce traffic congestion and delay by shifting travel to less congested periods or different modes, encouraging high vehicle occupancy, or reducing the number of vehicular trips taken.

VMS.  Changeable message boards located on a facility that display to customers text information such as weather and road conditions that may affect traffic conditions and travel times. Also known as Dynamic Message Sign (DMS).

Refers to an error in the toll communication system which occurs when something between the On-Board and Road Side dialogue has failed.

Violation Enforcement System. The collective equipment and procedures that capture a violation transaction, image and the citation process.

Spanish trademark for ETC.

Vehicle Information and Communication System. A Japanese system which transmits real time traffic information to a car navigation system which is them displayed in text and graphic form.

A billing system using video images of a vehicle’s license plate to identify the customer responsible for toll payment.

A sticker proving that a distance or time-related toll has been paid by the user.

Vehicle Infrastructure Integration

A record of an unpaid toll which occurs when a customer does not pay the proper amount.

Camera located at each toll lane that takes pictures of violation events. Image capture contains, at minimum, human or Optical Character Recognition (OCR) readable pictures of the front, rear or both license plates.