data model entity for a commercial activity of interest to travellers as a destination and/or orientation that is associated with road element(s) by which it can be accessed and further described by attributes including (at least) name and type

NOTE A service may be associated with other services by parent/child relationships (many to many). Service is used synonymously with POI within the logical data model.

travel time is the actual time required for a vehicle to pass through a specific roadway section in a route

the recommended route is a route calculated by the CDRG infrastructure and sent to the invehicle unit

application category that deals with the determination of vehicle location and map matching

NOTE Positioning is one of the six application categories supported by the API.

application category that deals with the determination of routes between specified points

NOTE Route planning is one of the six application categories supported by the API.

under SRG, the vehicle follows a route generated by the in-vehicle unit using only fixed information such as distance and other data stored in onboard map databases

system which provides a driver with step-by-step driving instructions that are determined by an on-vehicle system

NOTE The system typically consists of a display screen, a computer, routing and guidance software, a navigable map database, and positioning equipment to track the vehicle's location as it proceeds along its path.

information related to link(s) composed of condition type, condition modifiers, and condition scope

collection of information that may be regarded as an undivided whole

EXAMPLE One data set, one Section, one Layer.

system for broadcast of (digitally encoded) traffic messages on RDS

traffic assignment is the distribution of traffic in response to the needs of both the traffic situation and the intents of management personnel at the traffic control centre in order to realize a safe, smoothly flowing traffic environment