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37 practice in the airport sector. Neither is it clear whether HID lights were identified as the best lamp type, and the place- research is being applied to vehicle design as much as normal ment of lights at eye level angled downward was deemed to be business practices are. One airport conveyed that it was tough most effective, though the latter is an area needing more study. to get the manufacturer of their snow removal equipment to How to enhance visibility from the cabin is provided through accept ergonomic design changes to its vehicle since the pro- respondent suggestions. The current design philosophy is to duction line was not set up to accommodate such a request. provide as much glass area as possible and to fluid deluge systems, good wiper blades, and an effective defroster sys- tem. Another influential factor helping to reduce the risk of SUMMARY collision by enhancing visibility is the height of the cabin and the ability to sit up high and look out and over the swirling Chapter eight addresses how the design of vehicles and attach- snow. Further factors described in the chapter are the design ments, the layout and equipping of cabins, and the placement of the plow blade and deflectors and the speed capability of of lights all have an impact on the prevention of incursions. the vehicle.