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| | Rail |
 | | Geometric characteristics of grade crossings that can influence their safety include the distance between the traffic light and the crossing, limited sight distance, complex intersections near the crossing, acute angle of intersection between the rail tracks and the road, and "humpback" crossings which can cause long vehicles to become grounded. |
 | | These materials were evaluated in terms of their ability to assist the motorist to: (1) detect the freight car in a grade crossing, and (2) recognize the potential of the hazard, and thus avoid a collision with a train at a highway-railroad grade crossing. |
 | | At a grade crossing, a driver uses sensory information from the train (a "signal" which consists of visual, auditory, tactile and olfactory elements) and the area surrounding the crossing (background "noise") to judge the proximity or position of the train. |
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