1.3.1 - Traffic Data Analysis for Incidents DFDThis DFD shows the processes that make up the Traffic Data Analysis for Incidents facility within the Manage Traffic function. These processes analyze traffic data to look for indications of possible incidents.
The key points about the facility are as follows:
- Video image and other sensor data analyzed for indications of possible incidents;
- Location of possible incidents fixed by location of data source.
There are three processes in this DFD:
a) Analyze Traffic Data for Incidents (18.104.22.168)
b) Maintain Static Data for Incident Management (22.214.171.124)
c) Process Traffic Images (126.96.36.199)
Process (a) provides data about possible incidents. It takes data from traffic sensors provided by processes in the Provide Traffic Surveillance facility - see DFD 1.1.1 plus video image data provided by process (c), and analyzes it for anomalies that may indicate the presence of a possible incident. When a possible incident is detected, the process sends the data to the Review and Manage Incidents facility - see DFD 1.3.2. Process (c) acts as the video image processor. It can also change the video image being used for incident analysis and provide the actual video images at the request of the traffic operations personnel through processes in the Provide Operator Interface for Incidents facility - see DFD 1.3.4.
The three processes should be implemented as a group of three. However there may be some implementations without process (c) which provides analysis of video images.
DFD: 1.3.1 - Traffic Data Analysis for Incidents
Parent DFD: 1.3 - Manage Incidents
PSpecs in this DFD:
- 188.8.131.52 - Analyze Traffic Data for Incidents
- 184.108.40.206 - Maintain Static Data for Incident Management
- 220.127.116.11 - Process Traffic Images