Northern Virginia's freeway safety service patrol (SSP) had an estimated annual savings of $6.49 million in motorist delay and fuel consumption resulting in a benefit-cost ratio of 5.4:1.
Experience with the SSP for NOVA's freeways from 2003 to 2004.
A Return on Investment (ROI) study of the NOVA SSP computed the average durations for SSP-assist incidents to those without SSP-assist (state police assist only). The study compared incidents that matched by type, road and traffic conditions. Records of 22,233 SSP-assist incidents that occurred from May 31, 2003 to June 1, 2004 were obtained from the Incident Management Database (IMD). Records of matching, non-SSP assist incidents were obtained from the Virginia State Police (VSP) computer-aided-dispatch (CAD) system.
- The estimated ROI was $6.49 million in terms of savings in delay and fuel consumption.
- The total annual SSP operating costs of $1,193,511 resulted in a benefit-cost ratio of 5.4:1.
Author: Dougald, L. E., & Demetsky, M. J.
Source Date: 2008URL: http://trb.metapress.com/content/n718486588578183/
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freeway service patrol, courtesy patrols, highway helpers, freeway service patrols