TRB’s Transportation Research Record (TRR): Journal of the Transportation Research Board, No. 2436 consists of 16 papers that examine crossover roundabouts; safety effects of using short left-turn lanes at unsignalized median openings; horizontal clearance offsets to objects higher than sight lines; effects of geometric and traffic variables on double left-turn lane operations; and stopping sight distance and horizontal sight line offsets at horizontal curves.

This issue also explores an approach to horizontal curve design; geometric and operational improvements at continuous flow intersections to enhance pedestrian safety; a reliability-based geometric design approach for selecting basic number of freeway lanes; a superelevation design for sharp horizontal curves on steep grades; assessing suitability of nontraditional development in roadside right-of-way and a conflict scoping process to transportation projects.

In addition, this TRR summarizes strategies to optimize the management of right-of-way parcel and utility information; the removal of dissolved heavy metals in highway runoff; stochastic empirical loading and dilution model for analysis of flows, concentrations, and loads of highway runoff constituents; wave-induced scour at cylindrical piles; and a model of flow regimes in porous pavement and porous friction courses.