"TRB's Transportation Research Record: Journal of the Transportation Research Board, No. 2389 consists of seven papers that explore driver yielding behavior to pedestrians; emissions estimation at multilane roundabouts; the safety effects of converting intersections to roundabouts; predictions of capacity for roundabouts; the influence of sight distance on crash rates and operating speeds; roundabout critical headway measurement; and driver behavior analysis and trajectory interpretation at roundabouts."--publishers summary.