Group Overview: The Highway Safety Improvement Program (HSIP) Group focuses on potentially hazardous locations and hazardous features analysis. Every two years the TSSMU produces a Potentially Hazardous Location listing to inventory hazardous locations on North Carolina roads. These locations are submitted to field engineers for on-site investigation, further analysis, and recommendation of engineering countermeasures to address the safety problems. Included in the safety program are locations with crashes involving intersections, interchanges, bridges, pedestrians, wet pavement conditions, and night-time crashes.