TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2122 includes 10 papers that explore the effectiveness of dynamic speed display signs in transition zones of rural highways; alternative procedures for setting curve advisory speed; improving signing from the installation perspective; advance warning signals; traffic control device guidelines for horizontal curves; path guidance for work zones at freeway interchanges; traffic sign luminance and text size; highway–rail grade crossing collisions; driver behavior at highway–railroad crossings; and stop sign treatments at highway–railroad grade crossings.
    
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