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SAE J2735-Draft-Rev18 [issued: 06-26-07]
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This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
3. Terms and definitions
For the purposes of this standard, the following definitions, abbreviations and acronyms apply.
3.1 Definitions
For the purposes of this standard, the following definitions shall apply.
3.1 Actuated Operation: A type of traffic control signal operation in which some or all signal phases are
operated on the basis of actuation.
3.2 airlink: A radio frequency communication interface, such as that defined by WAVE.
3.3 application class identifier (ACID): A code that identifies a class of application, as defined by the
IEEE.
3.4 application context mark (ACM): A code identifying a specific instance of an application (as defined
in IEEE documents).
3.5 application-specific data dictionary: A data dictionary specific to a particular implementation of an
ITS application. Local deployments which use DSRC (or other message sets) may often select a subset of
the defined messages meeting their specific needs and create an application-specific data dictionary for that
deployment.
3.6 approach: OUTDATED: Definition to be refined by committee. In the context of this standard an
approach is a flow of traffic preceding to an intersection consisting of one or more lanes of travel.
3.7 Approach: All lanes of traffic moving towards an intersection or a midblock location from one
direction, including any adjacent parking lane(s)
3.8 approach lanes: OUTDATED: Definition to be refined by committee. In the context of this standard
the term approach or the term approach lanes is a geberal term used to refer to one or more lanes of traffic
flow which arrives at or leaves from an interaction.
3.9 byte type encoding: A type of information encoding where units of information are handled in modular
increments of 8 bits.
3.10 computed lane: Definition to be refined by committee. The computed lane is a data concept used in
this standard to express the geometric path of a lane approaching an intersection which can be "computed"
from the data found in a related "reference lane" with a similar geometric path.
3.11 Conflict Monitor: A device used to detect and respond to improper or conflicting signal indications
and improper operating voltages in a traffic controller assembly