Low Level Function
7.1.3 Get Vehicle Information
Overview
This Function shall be capable of providing the following facilities:
(1) The ability to collect or measure some information about a Vehicle to check that it is complying with the rules enacted for the System.
(2) The ability to process the information if it has been collected by functionality in other Functional Areas, or by actuators connected to the Function.
(3) The ability to process the information provided to the Function even if it has not been systematically checked.
(4) The ability to collect information such as "weight in motion", recording the weight per axle and total weight for Freight Vehicles, and it shall ask the Vehicle's Driver to provide records, or route, speed, etc.
(5) The ability to receive guidelines from functionality in the Manage Traffic Functional Area about the way that rules should be applied and compliance checked.
Functional Requirements
(a) if the second trigger input data flow is received, carry out the measure of the parameter to be checked based on its contents
(b) if the third or fourth trigger input data flows are received, collect the measure from the Manage Traffic Area
(c) ask the Driver for the delivery of the record to be controlled using the third trigger output data flow
(d) receive the record to be controlled from the Driver using the first other input data flow
(e) ask the vehicle for its identification using the first trigger output data flow and wait for a response
(f) receive the identification from the vehicle, if available using the second other input data flow
(g) extract the useful information from the measure so that it can be analysed
(h) send the measure to the Check Compliance Function using the second trigger output data flow.
Diagrams
Parent Higher Level Function
Input logical dataflows
Output logical dataflows
User needs
Number | Description |
| The system shall enforce the traffic laws and regulations of the region automatically (where possible). |
| The system shall be able to collect the evidence of a violation of the traffic laws and regulations in a manner suitable to justify the application of a legal punishment |
| The system shall be able to provide support for the enforcement of safe behaviour and vehicle priorities. |
| The system shall not obstruct or slow down traffic in any way, except when it is part of access control. |
| The system shall be able to measure the characteristics, e.g. length, weight etc., of a vehicle automatically, whilst the vehicle is in motion ("Weigh in Motion"). |
| The system shall be able to identify the cargo being carried by a heavy goods vehicle automatically. |