Carl Sundstrom

TL;DR: In this article, the authors characterize collisions reported to be on two-lane road curves in North Carolina using the Highway Safety Information System (HISIS) and provide recommendations from the literature to treat overrepresented collision types on horizontal curves, such as collisions on grades, rural, severe injury or fatal, fixed object (particularly tree, ditch, and embankment), overturn, off peak hours (particularly during darkness on unlighted roads), weekend, holiday periods, and wet, icy, or snowy pavement.

TL;DR: In this article, three GIS applications were evaluated for performance accuracy on the basis of a comparison with precisely drawn curves [with radii ranging from 30.5 to 60.5.

TL;DR: In this article, the authors estimated crash modification factors (CMFs) from before-after evaluations of two treatments targeted at reducing left-turn crashes at signalized intersections: (a) changes from permissive to protected-permissive phasing and (b) the implementation of a flashing yellow arrow for permissive left turns.

TL;DR: In this paper, the authors present crash modification factors (CMFs) for safety strategies at signalized intersections, which are a tool for quickly estimating the impact of safety improvements at intersections.

TL;DR: All four of the treatment types were found to be associated with reductions in pedestrian crash risk, compared with the reductions at untreated sites, and RRFBs had their basis in a limited sample and must be used with caution.