This Function shall be capable of providing the following facilities:<br/><br/>(1) The ability to provide support for the Driver to determine the applicable road based information that can be displayed in the Host Vehicle.<br/>(2) The ability to include in the information the current legal speed limit and information about junctions that are being approached as the Host Vehicle moves through the road network.<br/>(3) The ability to receive digital map data from the Geographic Information Provider including legal speed limits and road signs, which shall be loaded into the store of Road Information Data.<br/>(4) The ability to use the data from the store together with the current location of the Host Vehicle in the road network to determine the current maximum legal speed for the Host Vehicle and any approaching changes in road geometry and layout for which signs are available.<br/>(5) If available the ability to apply any override of the legal speed limits provided by the Manage Traffic functionality.<br/>(6) The ability to send the legal or overridden speed limits to other functionality for display to the Driver and for use in monitoring the safety behaviour of the Vehicle.<br/>
(a) continuously monitor for the receipt of the vehicle position for legal speed, legal speed limit and road information data plus inter-urban and urban legal speed limit override data flows;<br/>(b) when in (a) any but the vehicle position data flow is received, load their contents into the store of Road Information Data using the load road information data flow;<br/>(c) when in (a) the vehicle position for road information data flow is received and it has changed since it was last received, use the read road information data flow to obtain the relevant contents of the store of Road Information Data and determine what the legal speed limit should be plus other road based information that should be displayed to the driver;<br/>(d) send the result of (c) to the Display Current Road Information function in the current road information data flow and to the Monitor Vehicle Safety Behaviour function in the legal speed for safety behaviour data flow;<br/>(e) also send the current legal speed limit (either from the geographic information or as overridden) from (c) to the Prepare Extended Floating Car Data function in the legal speed for ISA data flow.<br/>