Benefit-Cost Analysis of Integrated Paratransit Systems: Volume 5. The Impacts of Technological Innovation

Flusberg, M.; Menhard, H. R.; Walker, J.; Sobel, K. · 1979 · ROSA P / United States. Urban Mass Transportation Administration

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Summary

This report, Volume 5 of a six-part series sponsored by the Urban Mass Transportation Administration (UMTA), analyzes the economic impacts of technological innovations on integrated paratransit (IP) systems. The study addresses the need to evaluate how technologies such as digital communications and automated dispatching affect the cost-effectiveness of IP services, which combine fixed-route transit with demand-responsive services. The research was conducted by Multisystems, Inc., between April 1977 and June 1978, to determine whether these innovations could reduce the labor-intensive nature of paratransit operations and offset operating deficits. The methodology involved a detailed benefit-cost analysis of two primary technologies: digital communications and computerized dispatching. The researchers utilized parametric modeling to estimate impacts across various system sizes, demand rates, and service areas. They focused on dynamic dispatch, many-to-many demand-responsive transit (DRT) systems, as these scenarios maximize communication requirements and thus offer the highest potential for technological gains. The analysis compared the costs of implementing hardware (e.g., mobile terminals, central translators, minicomputers) against potential savings in vehicle fleet size, operating hours, and control room staffing. Preliminary assessments were also conducted for other innovations, including automated vehicle monitoring and new paratransit vehicles. The findings indicate that digital communications and automated dispatching are potentially cost-effective, particularly when used in combination. Digital communications, which transmit data rather than voice, reduce vehicle dwell time by eliminating the need for drivers to manually record passenger information. This increases effective vehicle speed and productivity, allowing for fleet reductions of 3% to 13%. For a 32-vehicle system with a base annual operating cost of $2.2 million, digital communications alone could yield annual savings of up to $188,000. Computerized dispatching further reduces passenger wait times and variability. When combined with digital communications, the net benefits increase significantly, with potential annual cost reductions of up to $444,406 for the same 32-vehicle system. The study also noted that automated vehicle monitoring could increase productivity by up to 5%, while a new paratransit vehicle design could save $3.2–10.7 million annually in national subsidies. The significance of this research lies in its identification of specific technological interventions that can improve the financial viability of integrated paratransit systems. The study concludes that while IP systems generally face operating deficits, high productivity achieved through technological innovation and low operating costs can offset these losses. The results provide a framework for transit agencies to evaluate the implementation of digital and automated systems, highlighting that the greatest economic benefits occur in systems with high demand rates and larger vehicle fleets. This analysis supports the strategic deployment of technology to enhance service efficiency and reduce reliance on subsidies.

Key finding

Digital communications and computer dispatching are potentially cost-effective technological innovations for integrated paratransit systems, with combined implementation yielding up to $444,406 in annual cost reductions for a 32-vehicle system.

Methodology

modeling

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