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The potential for the enhancement of the performance of current traffic control
systems, through supervisory control making use of in-vehicle roure guidance, has
created the need for a flexible computing environment in which various new
applications can be fully integrated with existing traffic control systems without
adversly affecting their performance.
The Distributed Memory Environment (DIME), developed by the RTTS group,
provides an interface between
software modules that execute on distributed computing nodes.
The software has been designed specifically to support
a wide spectrum of transport telematics applications and it offers
a convenient interface to the applications programmer. The operation of
the DIME system has been successfuly evaluated in trials over Internet
involving heterogenous computing nodes at the Nottingham Trent University
and Helsinki University of Technology. The details are documented in
a separate publication.
The following is the illustration of the interoperation of two application
tasks and a shared memory manager task. The Dummy SCOOT
(data provider)
task was designed to mimick the operation of the real SCOOT system
and to write historical traffic mesasurements to shared memory
(Memory Manager task).
This measurement data was subsequently retrieved by a generic Data Analysis
(data consumer)
task which, in this test scenario, is the measurement visualisation task.
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