TMC Data Dictionary

This page lists in alphabetical order the major data items and external entities used in the simulator.

Author

The creator of an incident script.

CAD Display

A graphical presentation of events occurring in the simulation.

CAD Message

A communication from the CAD Server describing status of CHP Units and inident events.

Developer

The person with knowledge of the traffic model that can provide details of traffic flow for use in the simulation.

Highway Map

The config/vds_data folder contains a reference file of input data giving the locations of all highway sensors in a certain region of the state highway network. Each line in the file identifies one sensor location and contains these fields: FWY Dir POSTMI LDS_ID VDS_ID LOOP_ID LOC LANE LOOP_LOC PARAMICS_NAME PARAMICS_LANE

Highway Network Display

An ASCII representation of the traffic events for verification by the developer.

Highway Network Status Info

The state of the highway model.

Incidents

One or more highway incidents being simulated such as an overturned produce truck or a vehicle collision.

Incident Script

An xml file describing all the incidents to be presented during a simulation run.

Phone Numbers

Phone numbers of relevant agencies for reference by trainees during a training session.

Properties

Configuration settings by which developers can control various parameters of the simulation.

Simulated Traffic Sensor Data

Data representing simulated highway traffic sensors that provide realtime state of traffic conditions at specific points in the highway roadway.

Traffic Conditions

The state of the traffic network in a form ready for graphical display.

Traffic Events

An internal representation traffic flow details.

Traffic Flow Details

Human readable but encoded form of stopped, slowed, or free flowing traffic that will be incorporated into the highway model.

Trainee

A Cal Trans dispatcher trainee using the simulation.