City of Tokyo Metropolitan Highway Line

RTI

City of Tokyo Metropolitan Highway Line

RTI RTI
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OVERVIEW

The city needed a low maintenance, highly reliable communications system that was sufficiently robust for the delivery of constant updates to the kiosks. One of the problems facing the developers was that the environment in which these connections are maintained runs the gamut: under roadways and rail lines, next to hot cabling in the transit system through a variety of soil and wetness conditions. Depending on weather conditions, the transmission capabilities of the various physical media can vary widely.

The City of Tokyo Metropolitan Highway Line system consists of a central information-control center and hundreds of information kiosks and displays scattered along the highway. This allows the drivers and passengers who visit the rest stops to get information on traffic conditions, projected arrival times, alternate routes, and enforcement points where traffic is being redirected or controlled due to obstructions in the roadways caused by construction or accident.

With RTI middleware, system designers do not need to be concerned with the underlying communications protocols. The developer only needs to tell the system what the bandwidth constraints are, what information is needed at each node, what actions need to be taken, when to send it or to receive it, and what is required in response.

Traffic conditions, projected arrival times, alternate routes, and enforcement points where traffic is being redirected or controlled due to obstructions
IT
Emerging (technology has been on the market for > 2 years)
OPERATIONAL IMPACT
Designers can adapt RTI publishsubscribe middleware to a heterogeneous system with servers and terminals based on different types of processors and running different operating systems.
The performance of typical network protocols is dependent on the bandwidth available. Publishsubscribe is much more forgiving and able to work with a minimum bandwidth.

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