Surveillance System

The surveillance system module bridges MITSIM and TMS. SIMLAB can simulate the following types of sensors:

• Traffic sensors, which collect traffic counts, occupancy, and speed data at fixed points in the network (e.g. loop detectors);
• Vehicle sensors, which extract information on individual vehicles such as vehicle type, over-height attributes, vehicle identification, etc.;
• Point to point data sensors, which extract information from probe vehicles and/or detectors (such as travel time from one point in the network to another); and
• Area wide sensors, which collect information on vehicles (such as positions and speeds) within a wide detection zone (e.g. radar detectors and video cameras).

The readings from all active sensors are communicated to TMS and appropriate errors are then added to represent detector and communication errors. The magnitude of the errors can be controlled in the scenario definition. This allows for studying the sensitivity of the system performance with respect to the accuracy of its surveillance system.