Assessment of Emerging Opportunities for Real-Time, Multimodal Decision Support Systems in Transportation Operations

Operational Constraints

•Limitations of service provider technologies and connectivity among providers

•Limitations and gaps in necessary data

•Limitations in communications interfaces

•Lack of standardization of data flows

•Shortages in properly trained personnel

•Trust of service providers

•Lack of stakeholder organization and awareness


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	The deployment of decision support systems multi-modal or otherwise is currently frequently limited by many factors. The following are examples that have been encountered:
	Limitations in data provided by one or more modes of transportation – typically arterial data is a limiting factor but lack of full integration of field element systems also contributes to the problems, as does partial data for transit systems
	Communications network limitations i.e. interfaces are lacking between mode specific systems
	Lack of standardization of data flows- implementation of standards such as TMDD and others support the way forward but have yet to be fully deployed
	Shortages in properly-trained personnel
	Data gaps caused by underfunded system maintenance
	Reluctance of certain modal operators to trust the control results of DSS and inability to fine tune to suit their preferences and experience
	Inherent limitations of certain transportation modes, e.g. city TMC’s not monitored on a continuous basis, legacy signal systems which cannot be monitored or manipulated automatically, rail and transit information not fully and accurately available in real-time, public safety systems using different protocols.
	Lack of stakeholder organization and awareness – the Integrated Corridor Management Pilot programs expose the need and extent of cooperation needed