Separate expressway lanes operating in parallel with other general purpose travel lanes on a given route and require a price for their use.  Traffic in the managed lanes may controlled by access rights, vehicle occupancy, vehicle type, and/or a variable price.  Priced managed lanes may include discounts or exemptions from certain users, such as high-occupancy vehicles, motorcycles, and transit vehicles.  In the US, most Priced Managed Lanes are signed as "Express" or "Express Lanes."

Payment Service Provider. An organization that collects the money from the customer and handles the payment of services (e.g. credit or petrol card companies, banks).

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

PKI. A set of policies and procedures for establishing a secure method for exchanging information. It includes the use of Certificate Authorities (CAs), Keys and digital Signatures as well as all the hardware and software used to manage the process.

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.

Also known as Ramp Control and Motorway Access Control. Implementation of signal control measures on a ramp or on slip road to control the traffic entering the main road in order to ensure a smooth downstream traffic flow.

A toll point or toll plaza on an interchange ramp rather than across a highway mainline. Ramp plazas may support barrier-type tolls at fixed rates, or support entry-exit systems by tracking the entrance or exit from the toll system.

Manned or automatic lanes that are separate from the main plaza of a toll facility used for entrance to, or exit from the tollway.

Road Charging Interoperability. This project is financed by the European Commission and it proposes to make possible to carry out any road charging transaction in Europe with a single in-vehicle equipment. The RCI project will develop an open, integrated framework enabling road charging interoperability at the technical level based on the key existing and planned road charging deployments in Europe (AUTOPASS, EUROPASS, LSVA, TELEPASS, TIS, TOLLCOLLECT, VIA-T and VIA VERDE).

The RCTC is responsible for coordinating highway and transit planning and identifying projects for state and federal funding, and for all aspects of regionwide planning for Riverside County’s mobility.  http://www.rctc.org/

Radio Data System – Traffic Message Channel

Also known as dynamic or congestion pricing. With Real Time pricing, tolls are continually adjusted according to traffic conditions to maintain a free-flowing level of traffic. Under this system, prices increase when the tolled lane(s) get relatively full and decrease when the tolled lane(s) get less full. The current price is displayed on electronic signs prior to the beginning of the tolled section.

The process by which the Back Office is used to adjudicate conflicts in transaction data (e.g. the difference between an Automatic/Automated Vehicle Classification (AVC)-determined vehicle class and the customer’s pre-programmed tag class) and establish the toll amount to be deducted from the customer’s account.

Regional European Electronic Tolling Service - The REETS project is to support the existing EU legislation on the interoperability of electronic road tolls collection (see EETS). The project is focused on EETS compliant services in cross-border regional areas, including : Austria, Denmark, France, Germany, Italy, Poland and Spain, as well as Switzerland. https://www.aetis-europe.eu/about-eets/   

A toll facility user who has enrolled in either an RFID tag or "pay by plate" program.

Pricing that is intended to change consumption patterns.

Radio Frequency Identification - Radio-frequency identification (RFID) is the wireless contactless use of radio-frequency electromagnetic fields to transfer data, for the purposes of automatically identifying and tracking tags attached to objects. The tags contain electronically stored information. Some tags are powered by and read at short ranges (a few meters) via magnetic fields (electromagnetic induction). Others use a local power source such as a battery, or else have no battery but collect energy from the interrogating EM field, and then act as a passive transponder to emit microwaves or UHF radio waves.

Also called Value Pricing. A system by which congestion and improved roadways can be managed through different lvels of toll rates at peak and non-peak hours.

The roadside infrastructure component of an ETC system; a receiver or transceiver that identifies the On-Board Unit in the vehicle, and identifies the account, permitting an electronic toll transaction to occur.  Also called a ‘reader,’ or ‘beacon.’  Also referred to as RSU.

Also referred to “Mileage-Based User Fees (MBUF),” or “Vehicle-Miles-Traveled (VMT) Fees.” Pricing the use of roadways by distance travelled on any facility. This may be applied on specific roadways or on all roads in a jurisdiction. Governments are exploring the utility of this transportation revenue options as a replacement for motor fuel taxes as a sustainable revenue source.

Also known as a Rotary and a Traffic Circle. A road junction where traffic circulates in one direction.

Road Side Equipment

Road-Side Unit. The roadside infrastructure component of an ETC system; a receiver or transceiver that identifies the On-Board Unit in the vehicle, and identifies the account, permitting an electronic toll transaction to occur.  Also called a ‘reader,’ or ‘beacon.’

Road User Charge - User charges are direct charges levied for the use of roads, including road 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 the associated traffic congestion or other social and environmental negative externalities associated with road travel such as air pollution, greenhouse gas emissions, visual intrusion, noise and road accidents.

Safe Accountable Flexible Efficient Transportation Equity Act: A Legacy for Users - The Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU) is US federal transportation legislation, enacted Aug. 2005, which provided for funding and directions to suport the Federal-aid highway program.

The point in a traffic condition where the arrival flow rate exceeds the maximum sustainable flow.

Sydney Co-ordinated Adaptive Traffic System. A traffic signal control system in Syndney, Australia.

Split Cycle and Offset Optimisation Technique. A traffic signal control system.

Schéma Directeur d’Exploitation de la Route. The national traffic management master plan for France.

Schéma Directeur d’Information Routière. The road information master plan for France.

The section of a highway or managed lane toll facility between interchanges.

Another term used for an AET-Mainline based system, with ORT toll points between interchanges to effectively charge a toll for the use of each facility segment.

Any organization that provides a service, which is authorized and/or paid for through the use of a transponder. The most common example today is Toll Authorities. Other examples may be retailers, parking facilities, etc. who accept transponder transactions as payment or as part of ITS functions.

Système de Gestion des Cartes de l'Assurance Maladie

Tolls charged per vehicle that are not paid by the driver of the vehicle, but instead are paid by a third party such as a sponsoring governmental entity.

The Signature is a code, encrypted by a Private Key, which may be used by third parties verify that data or transactions containing the Signature originated from a specific Private Key. For example, when the On-Board Unit Private Key is used to “sign” data, the Signature may be later verified by the Issuer as coming from the Private Key. This prevents an intermediary who does not know the Private Key from altering the message or its contents. As used here, a Signature is inserted in each transaction generated by an On-Board Unit. The Signature remains with that transaction until the transaction is processed by the Issuer. Issuer processes the transaction. This allows the Issuer to independently verify the source and integrity of the transaction.