Low Level Function
3.1.5.7 Detect Vehicle Approaching Rest Area

Overview

This Function shall be capable of providing the following facilities:

(1) The ability to continuously monitor the area around the entrance to a rest area in a service area for the approach of Vehicles.
(2) When its sensors detect that a Vehicle is approaching the ability to use the data from the sensors to determine the Vehicle identity.
(3) The ability to send the Vehicle identity data to the functionality that manages service area rest area bookings.

Functional Requirements

(a) continuously monitor for receipt of either of the input data flows
(b) when either of the data flows in (a) is received, use its contents to determine the identity of the vehicle
(c) send the vehicle identity determined in (b) to the Manage Service Area Rest Area Bookings function in the freight vehicle identity for rest area data flow.

Diagrams

The Diagram(s) is (are) the diagram(s) where you can find the function :
  • DFD 3.1.5 Provide Management of Service Areas
  • Functional tree 3.1
  • Parent Higher Level Function

    Input logical dataflows

    Output logical dataflows

    User needs

    Number

    Description

    9.5.7.9
    The system shall be able to identify the vehicle that arrives at a rest area, and to inform the driver which parking slot to use and how to get there.