Traffic signal power failures can degrade the efficiency and safety at intersections that warrant traffic signal control. Alternative Power Sources (APS) are typically used to power traffic signals during power outages. Signals operating agencies need a decision making framework to identify optimal locations and deployment schedule for APS systems. This paper presents a methodology for optimal deployment of APS at signalized intersections with limited budget. This methodology can also be used to investigate the economic viability of using wind and solar energy as APS at a signalized intersection. Benefit-cost analysis is used as an economic tool, and optimization model is developed. The primary benefit of an APS is improving traffic operation efficiency and safety. The renewable sources, if harnessed, would add energy production and environment benefits. The methodology presented in this paper is generic and can be adapted to site specific condition by appropriately choosing the model inputs. A case study for a test network in Nebraska demonstrates the step by step implementation of the proposed methodology.
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