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Abstract:During the Winter of 1977-1978, a major snow storm shut down the Boston transit system for almost a week and the Winter of 1978-1979 produced similar snow conditions that paraylzed the Chicago transit system and disabled more than half of their rail fleet. As a result of these disruptions and breakdowns, the Snow Belt Transit operators became increasingly aware of the need for special measures that must be taken in order to maintain rail operation during severe winter conditions. This need was highlighted at the American Public Transit Association's conference in the Spring of 1979 at which time a Snow and Ice emergency Task Force was formed. This task force determined that a high capacity special purpose snow removal vehicle was needed by the industry, designed for removing the heaviest accumulation from a rail transit system's right-of-way. This Specification Guide is intended as a guide for Snow Belt rail transit operators to use in the preparation of technical specifications for the procurement of snow removal vehicles. It is not intended to be a procurement document. This Guide has been developed to provide the purchaser with a choice as to the type of vehicle and options that will best satisfy site-specific needs. Since the operating constraints of commuter rail are no more restrictive than those for rapid transit, commuter rail operators are encouraged to use this document in the development of their own technical specifications for snow removal vehicles. Only existing, proven design concepts are considered here in the interest of lower costs, shorter delivery times, and avoidance of costly prototype developments for each transit system. The three types of snow removal vehicles described in this Specification Guide are: 1) rail-mounted "jet" blower; 2) rail-mounted rotary blower; and 3) rail/highway rotary blower.
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