carriageway

contiguous area of roadway along a road segment
NOTE 1 to entry: A carriageway is comprised of one or more traffic lanes [i.e. the usable width3.1.15)] and could include shoulders and lay-bys.
NOTE 2 to entry: Carriageways are separated by physical traffic separators.
NOTE 3 to entry: When looking at a cross-section3.1.1) of the road reservation, the roadway consists of all of the…

contiguous area of roadway along a road segment
NOTE 1 to entry: A carriageway is comprised of one or more traffic lanes [i.e. the usable width3.1.15)] and could include shoulders and lay-bys.
NOTE 2 to entry: Carriageways are separated by physical traffic separators.
NOTE 3 to entry: When looking at a cross-section3.1.1) of the road reservation, the roadway consists of all of the carriageways.

central reservation; median; median strip; neutral ground

part of the road reservation between carriageways designed for travel safety purposes
NOTE 1 to entry: A central reservation can be paved or unpaved and can be equipped with a safety barrier, rails, or other devices.

part of the road reservation between carriageways designed for travel safety purposes
NOTE 1 to entry: A central reservation can be paved or unpaved and can be equipped with a safety barrier, rails, or other devices.

CASE

computer-aided software engineering

concrete barrier; city block; Jersey barrier

physical traffic separator that consists of a wall with a wide, sloped base designed to divert vehicles back into their traffic lane
NOTE 1 to entry: Jersey barriers are typically modular. They are typically made of concrete but can also be made with other materials such as plastic filled with water or sand.

physical traffic separator that consists of a wall with a wide, sloped base designed to divert vehicles back into their traffic lane
NOTE 1 to entry: Jersey barriers are typically modular. They are typically made of concrete but can also be made with other materials such as plastic filled with water or sand.

cross-section

transverse view of road geometry
NOTE 1 to entry: The transverse view provides a vertical section of the ground and carriageway at right angles to the centre line of the carriageway.

transverse view of road geometry
NOTE 1 to entry: The transverse view provides a vertical section of the ground and carriageway at right angles to the centre line of the carriageway.

cycle lane

lane designed for the through movement of cycles
NOTE 1 to entry: Cycle lanes are typically much narrower than traffic lanes.
NOTE 2 to entry: Cycle lanes are typically part of either a carriageway or a cycleway.
NOTE 3 to entry: Cycle lanes could also allow and be designed for motorized vehicles (e.g. e-scooters, mopeds, etc.) with similar performance characteristics as human-powered…

lane designed for the through movement of cycles
NOTE 1 to entry: Cycle lanes are typically much narrower than traffic lanes.
NOTE 2 to entry: Cycle lanes are typically part of either a carriageway or a cycleway.
NOTE 3 to entry: Cycle lanes could also allow and be designed for motorized vehicles (e.g. e-scooters, mopeds, etc.) with similar performance characteristics as human-powered cycles, subject to local regulations.

cycleway; cycle track

infrastructure primarily designed for the use of cycles and separate from a carriageway
NOTE 1 to entry: Local legislation can allow cycleways to be used by a variety of low-speed vehicles (e.g. low-speed scooters, skateboards, etc.) and can share usage of other low-speed modes such as pedestrians, horseback riders, etc.

infrastructure primarily designed for the use of cycles and separate from a carriageway
NOTE 1 to entry: Local legislation can allow cycleways to be used by a variety of low-speed vehicles (e.g. low-speed scooters, skateboards, etc.) and can share usage of other low-speed modes such as pedestrians, horseback riders, etc.

dedicated transport network

transport mechanism that is able to carry people in special vehicles through a purpose built network, which is usually separate from, but can be part of an existing road network

transport mechanism that is able to carry people in special vehicles through a purpose built network, which is usually separate from, but can be part of an existing road network

driving space

area above the roadway that is primarily designed for the movement of vehicles
NOTE 1 to entry: In practice, the driving space design considers a variety of issues, which can result in suboptimal road segments that violate normal design guidelines. Such locations are typically posted with warning signs, but they are still designed for the movement of vehicles.
NOTE 2 to entry: While the…

area above the roadway that is primarily designed for the movement of vehicles
NOTE 1 to entry: In practice, the driving space design considers a variety of issues, which can result in suboptimal road segments that violate normal design guidelines. Such locations are typically posted with warning signs, but they are still designed for the movement of vehicles.
NOTE 2 to entry: While the driving space is designed with certain vehicle characteristics in mind, local regulations typically allow a wider set of vehicles to use the driving space.

dual carriageway road segment; dual carriageway road; divided highway; dual carriageway

roadway comprised of exactly two carriageways
NOTE 1 to entry: The PIARC term is “dual carriageway road” and is recognized as a preferred term. As per the definitions provided in this document, “dual carriageway road segment” is more accurate and is the most preferred term. The term “dual carriageway” by itself is not preferred but admitted.
NOTE 2 to entry: The term “divided highway” is…

roadway comprised of exactly two carriageways
NOTE 1 to entry: The PIARC term is “dual carriageway road” and is recognized as a preferred term. As per the definitions provided in this document, “dual carriageway road segment” is more accurate and is the most preferred term. The term “dual carriageway” by itself is not preferred but admitted.
NOTE 2 to entry: The term “divided highway” is the equivalent American English term and equates to two or more carriageways.
NOTE 3 to entry: The two carriageways are typically designed for travel in opposite directions.

dynamic route

concurrent operation where transported items can only be received or delivered at stopping points within a pre-defined service corridor
EXAMPLE: Airport shuttle.
NOTE 1 to entry: The service corridor is defined by the provider, who may impose further restrictions on where stops are allowed.
NOTE 2 to entry: The service corridor often includes a communal point of interest (e.g. an…

concurrent operation where transported items can only be received or delivered at stopping points within a pre-defined service corridor
EXAMPLE: Airport shuttle.
NOTE 1 to entry: The service corridor is defined by the provider, who may impose further restrictions on where stops are allowed.
NOTE 2 to entry: The service corridor often includes a communal point of interest (e.g. an airport, transit hub, etc.) as a fixed stopping point.

egress lane

traffic lane designed for exiting a junction

traffic lane designed for exiting a junction

egress link

all egress lanes on a road link

all egress lanes on a road link

environment; system environment

context determining the setting and circumstances of all influences upon a system
NOTE 1 to entry: The environment of a system includes developmental, technological, business, operational, organizational, political, economic, legal, regulatory, ecological and social influences.
[SOURCE: ISO/IEC/IEEE 42010:2011, 3.8]

context determining the setting and circumstances of all influences upon a system
NOTE 1 to entry: The environment of a system includes developmental, technological, business, operational, organizational, political, economic, legal, regulatory, ecological and social influences.
[SOURCE: ISO/IEC/IEEE 42010:2011, 3.8]

field support equipment; ITS field support equipment

portable field system used by field personnel to locally troubleshoot, initialize, reprogram and test infrastructure equipment

portable field system used by field personnel to locally troubleshoot, initialize, reprogram and test infrastructure equipment

fixed route

concurrent operation where transported items can only be received or delivered at stopping points contained in a pre-defined sequence
EXAMPLE: Traditional fixed-route bus line.

concurrent operation where transported items can only be received or delivered at stopping points contained in a pre-defined sequence
EXAMPLE: Traditional fixed-route bus line.

footway; footpath; pavement

lane primarily designed for the movement of pedestrians
NOTE 1 to entry: A paved footway is called a “pavement” in the British English.
NOTE 2 to entry: Regulations typically allow footways to be used by other ultra-low speed users, such as the users of wheelchairs and strollers.

lane primarily designed for the movement of pedestrians
NOTE 1 to entry: A paved footway is called a “pavement” in the British English.
NOTE 2 to entry: Regulations typically allow footways to be used by other ultra-low speed users, such as the users of wheelchairs and strollers.

grade separated manoeuvre

manoeuvre that is vertically separated from one or more manoeuvres that cross its two-dimensional path

manoeuvre that is vertically separated from one or more manoeuvres that cross its two-dimensional path

hard shoulder

part of the paved carriageway designed to support traffic loads but not normally intended for driving
NOTE 1 to entry: A hard shoulder can be narrow or wide enough for a traffic lane.
NOTE 2 to entry: A hard shoulder can have a surface that discourages usage as a driving surface in some countries.

part of the paved carriageway designed to support traffic loads but not normally intended for driving
NOTE 1 to entry: A hard shoulder can be narrow or wide enough for a traffic lane.
NOTE 2 to entry: A hard shoulder can have a surface that discourages usage as a driving surface in some countries.

hard shoulder for emergency use

operating mode of a hard shoulder that allows operation of emergency, construction, maintenance, or other special use vehicles or for emergency stopping and is prohibited for other vehicle usage

operating mode of a hard shoulder that allows operation of emergency, construction, maintenance, or other special use vehicles or for emergency stopping and is prohibited for other vehicle usage

hard shoulder running

operating mode of a hard shoulder that allows operation of general-purpose motor vehicles as an extra lane

operating mode of a hard shoulder that allows operation of general-purpose motor vehicles as an extra lane

hardstanding

part of a paved carriageway that is not a traffic lane, hard shoulder, or lay-by.
EXAMPLE: See Figure A.23.
NOTE 1 to entry: Hardstanding can include edges of a hard shoulder outside of designated lane markings, slips for future connector roads, etc.

part of a paved carriageway that is not a traffic lane, hard shoulder, or lay-by.
EXAMPLE: See Figure A.23.
NOTE 1 to entry: Hardstanding can include edges of a hard shoulder outside of designated lane markings, slips for future connector roads, etc.

high-speed vehicle

vehicle with a design speed7.2.2) in the range of high vehicle speeds7.5.12)
EXAMPLE: 1 Racing car.
EXAMPLE: 2 High-speed train.

vehicle with a design speed7.2.2) in the range of high vehicle speeds7.5.12)
EXAMPLE: 1 Racing car.
EXAMPLE: 2 High-speed train.

infrastructure

system of facilities, equipment and ITS services that is needed for the operation of an organization
NOTE 1 to entry: Specifically in the case of C-ITS the most stationary part of C-ITS incorporating sensors, actuators, static ITS Station(s).

system of facilities, equipment and ITS services that is needed for the operation of an organization
NOTE 1 to entry: Specifically in the case of C-ITS the most stationary part of C-ITS incorporating sensors, actuators, static ITS Station(s).

ingress lane

traffic lane designed for entering a junction

traffic lane designed for entering a junction

ingress link

all ingress lanes on a road link

all ingress lanes on a road link

integrated development environment

software that provides comprehensive facilities for application development

software that provides comprehensive facilities for application development

interchange (MÚK)

junction with at least one grade separated manoeuvre
NOTE 1 to entry: The term “interchange” typically refers to the facilities that enable all available manoeuvres at the grade separated intersection, which typically includes multiple junctions.
NOTE 2 to entry: The grade separation allows travellers on the link to pass unimpeded through the interchange when congestion is not present.

junction with at least one grade separated manoeuvre
NOTE 1 to entry: The term “interchange” typically refers to the facilities that enable all available manoeuvres at the grade separated intersection, which typically includes multiple junctions.
NOTE 2 to entry: The grade separation allows travellers on the link to pass unimpeded through the interchange when congestion is not present.

intersection

space where two or more roads meet or cross
NOTE 1 to entry: Intersections can be associated with zero junctions, such as a motorway crossing a road without any connecting ramps, or can be associated with one or more junctions, such as a diamond interchange.
NOTE 2 to entry: Complex intersections can be viewed as multiple intersections by providing separate designations for distinct road…

space where two or more roads meet or cross
NOTE 1 to entry: Intersections can be associated with zero junctions, such as a motorway crossing a road without any connecting ramps, or can be associated with one or more junctions, such as a diamond interchange.
NOTE 2 to entry: Complex intersections can be viewed as multiple intersections by providing separate designations for distinct road links. For example, one model could depict a complex intersection as being associated with multiple junctions; another model could depict the same physical infrastructure as being multiple intersections that are interconnected by different roads, each with its own designator (e.g. “ramp from northbound Road A to eastbound Road B”).

intersection manoeuvre; manoeuvre; maneuver

movement from an ingress lane to an egress lane
NOTE 1 to entry: The term “maneuver” is the American English spelling.

movement from an ingress lane to an egress lane
NOTE 1 to entry: The term “maneuver” is the American English spelling.