TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2398 consists of 12 papers that explore discontinuing late nighttime flash operations at signalized intersections; converting traffic signals from incandescent to led bulbs; the severity distribution functions for freeway segments; development of relationships between safety and congestion for urban freeways; safety effects of horizontal curve and grade combinations on rural two-lane highways; the spatial effects on zone-level collision prediction models; estimating annual average daily traffic for local roads; safety performance functions; the safety of channelized right-turn lanes for motor vehicles and pedestrians; and the influence of land use and driveway placement on safety performance of arterial highways.
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