Chattanooga SmartBus Project : phase 2 evaluation report

Rephlo, Jennifer; Haas, Robert; Bauer, John · 2008 · ROSA P / United States. Department of Transportation. National Highway Traffic Safety Administration

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Summary

This report presents the Phase II evaluation of the Chattanooga Area Regional Transportation Authority’s (CARTA) SmartBus Project, a comprehensive Intelligent Transportation Systems (ITS) initiative funded by the U.S. Department of Transportation. The study aims to determine the operational impacts of deployed ITS technologies and document lessons learned. The evaluation focuses on systems in place for at least one year as of January 2008, including data warehousing software, operations management scheduling tools, and ticket vending machines for the Incline Railway. The methodology involved staff interviews and the analysis of performance metrics such as ridership, on-time performance, and operational costs. The findings indicate significant operational improvements from the deployed technologies. The data warehousing and reporting software enabled rapid report generation and improved decision-making capabilities, such as monitoring fuel usage for maintenance and analyzing cost per mile for fleet purchases. Staff reported that the system saved approximately $60,000 in costs previously associated with manual data analysis and allowed personnel to focus on operations rather than data generation. Fixed-route scheduling software reduced the time required for "runcutting" from two weeks to five minutes, saving an estimated 60 hours of operator labor per week, or approximately $62,000 annually. For paratransit services (Care-A-Van), the new scheduling software increased efficiency, raising passenger trips per vehicle revenue-hour without adding vehicles. This efficiency gain was estimated to save CARTA approximately $89,000 by avoiding the need to expand service capacity to meet demand. However, not all hypotheses were supported. The impact of Incline Railway ticket vending machines on revenue was inconclusive, though they provided valuable ridership data for business decisions. The paratransit software did not significantly reduce the time required to issue invoices, nor was its impact on on-time performance testable due to data limitations. The report notes that full impacts, particularly regarding onboard systems like automated vehicle location and passenger counters, are expected in Phase III. The significance of the SmartBus Project lies in its demonstration of how integrated data management can transform transit operations. CARTA achieved a return on investment for the software and data warehouse within 1.65 years, with an estimated net annual benefit of $161,000. The project highlights the shift from manual, error-prone data collection to automated, accessible data archives, enabling better operational decisions and cost savings. The evaluation concludes that CARTA is well-positioned to leverage these technologies for further improvements as additional onboard systems are deployed.

Key finding

Fixed-route scheduling software saved approximately 60 operator labor hours per week, and paratransit scheduling software increased passenger trips per vehicle revenue-hour without increasing the number of vehicles used.

Methodology

mixed_methods

Provenance

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Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified.

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