A recording device contained in a box and installed at intersections of railroad crossings and highways or roadways which provides continuous simultaneous recording of the operation of both railroad wayside signal status and operation of the highway traffic signal systems sold and marketed to government and transportation entities

'box':7 'contain':4 'continu':21 'cross':14 'devic':3 'entiti':48 'govern':45 'highway':16,37 'instal':9 'intersect':11 'market':43 'oper':26,34 'provid':20 'railroad':13,29 'record':2,23 'roadway':18 'signal':31,39 'simultan':22 'sold':41 'status':32 'system':40 'traffic':38 'transport':47 'waysid':30

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