The ability to move or be moved easily.

The transfer of traffic from one transport mode to another. For passenger traffic, this may be from a motor vehicle to mass transit. For freight traffic, this may be for containers being moved from motorized commercial vehicles to freight rail.

A term used outside of North America analogous to "expressway," a limited-access highway facility with high construction and safety standards. In Europe, the term implies a toll road.

Memorandum of Understanding

Metropolitan Planning Organisations.

A multiprotocol technology bridges the interoperability gap between diverse RFID technologies used for electronic toll collection (ETC) and other ITS applications such as Automatic Equipment Identification and Electronic Vehicle Registration.

A term that represents a category of Telematics technologies, to include ETC, that will use the 5.8-5.9GHz worldwide ITS frequency band and will be designed in accord with open standards and specifications.

A tag associated to an account where passage is permitted in the absence of toll collection.

Operations and Maintenance (Department).

On-Board Unit. The in-vehicle device component of a DSRC (or ETC) system. A receiver or transceiver permitting the Operator’s Roadside Unit (RSU) to communicate with, identify, and conduct an electronic toll transaction; also called a ‘transponder’ or ‘tag.’

Organization that issues On-Board Unit (OBU) on behalf of the Contract Issuers.

The portion of time where a point or short road section is occupied by one or more vehicles. This data may be used as an input to measure congestion and establish dynamic toll rates. Note this is not the same as "vehicle occupancy," which refers to the number of people in a vehicle and is often used to determine managed lane eligibility or toll rates.

Optical Character Recognition. Hardware and software system capable of recognizing alpha-numerical characters.

Organisation For Economic Co-Operation And Development. The OECD consists of 30 member countries that share a commitment to democratic government and the market economy. Best known for its publications and statistics, its work covers economic and social issues from macroeconomics to trade, education, development, science and innovation.

OmniAir Consortium - The OmniAir Consortium, Inc. advocates for the development and promotion of certification for the Intelligent Transportation [Systems (ITS)] industry. 

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

OBU. The in-vehicle device component of a DSRC (or ETC) system. A receiver or transceiver permitting the Operator’s Roadside Unit (RSU) to communicate with, identify, and conduct an electronic toll transaction; also called a ‘transponder’ or ‘tag.’

An Open Barrier System is an arrangement of (typically mainline) toll points with discrete toll schedules for each location. Open barrier systems do not capture all potential trip origins and destinations and so allow some toll-free travel. An open barrier system may use ORT toll zones, or toll plazas.

A communications technology where all requisite knowledge is made available to vendors, operators and users at no cost, license fees, etc.

A process in which all qualified vendors are permitted and capable of bidding in the absence of requisite proprietary knowledge, hardware or software.

Section of a toll road where a fixed amount is paid, not depending on the distance traveled or on where the vehicle enters or exits the road.

Outil Pour l’Exploitation d’un Reseau d’Autoroutes. A system which monitors traffic conditions, predicts the traffic flows, analyses the impacts, then selects appropriate messages and continues to update these messages as required.

The entity responsible for a toll facility's day-to-day functions and services. A given toll facility’s operator may be the facility owner or may be a concessionaire under contract to the owner for various operational services such as toll operations and facility maintenance.

The OECD groups 30 member countries sharing a commitment to democratic government and the market economy. Best known for its publications and statistics, its work covers economic and social issues from macroeconomics to trade, education, development, science and innovation.

Open Road Tolling, which is one or more lanes of free-flow tolls on a roadway, generally operated at the prevailing facility speed limit. ORT uses electronic toll collection and license plate image capture for collection of tolls, without an in-lane cash payment option. Future ORT lanes may also deploy other automated identification technologies
“ORT” refers to the physical design of the toll point, whereas “AET (All Electronic Tolling)” refers to the methods of payment accepted at the toll point. In practice the terms are often used interchangeably.

A toll point with an "ORT" or "MLFF" roadway for high-speed non-stop tolls, with a conventional toll plaza safely separated from the ORT lanes at the same toll point.

Also known as Grade Separation. Where the traffic flows are separated by a bridge to carry one of the flows.

Any in-lane display capable of providing driver feedback (e.g. toll paid, low balance).

Any in-lane device displaying amount of toll paid (typically located in a Manual (cash) Lane or above the coin basket on the Automated Coin Machine (ACM).

Personal Digital Assistant

Toll rate changes during different times of day (rush hour), day of the week (weekends/holidays), so that the toll is higher during peak travel hours and lower during off-peak or shoulder hours.

Toll rate changes during different times of day (i.e., rush hour), day of the week (weekends/holidays) so that the toll is higher during peak travel hours and lower during off-peak or shoulder hours.

Peer to peer is an approach to computer networking where all computers share equivalent responsibility for processing data. Peer-to-peer networking (also known simply as peer networking) differs from client-server networking, where certain devices have responsibility for providing or "serving" data and other devices consume or otherwise act as "clients" of those servers.

A document which details the functional and business requirements of an Electronic Toll Collection (ETC) System without providing complete technical details (as would be presented in a technical specification) leaving this to the ingenuity of the proposer.

Pilot on Interoperable Systems for Tolling Application. A project sponsored in part by the European Union, focusing on Interoperable Systems for Tolling Applications. The main objective of the project is the actual implementation of Interoperable Electronic Fee Collection (IO-EFC) throughout a corridor belonging to several European motorway networks.

A public–private partnership, sometimes referred to as PPP, or P3, is a government service or private business venture funded and operated through a partnership of government and one or more private sector companies.  A PPP involves a contract between a public sector authority and a private party, in which the private party provides a public service or project and assumes substantial financial, technical and operational risk in the project.