Transportation Research Record: Journal of the Transportation Research Board, No. 2515, explores 15 papers related to statistical methods and highway safety performance, including: Multivariate Full Bayesian Hot Spot Identification and Ranking: New Technique. Modeling Crash Rates for a Mountainous Highway by Using Refined-Scale Panel Data Exploring Piecewise Linear Effects of Crash Contributing Factors with a Novel Poisson–Mixed Multivariate Adaptive Regression Splines Model. Classification of Gaps at Uncontrolled Intersections and Midblock Crossings Using Support Vector Machines. Safety Impacts of a Statewide Centerline Rumble Strip Installation Program. Evaluation of the Safety Effectiveness of the Conversion of Two-Lane Roadways to Four-Lane Divided Roadways: Bayesian Versus Empirical Bayes. Is Horizontal Curvature a Significant Factor of Safety in Rural Multilane Highways. Developing Calibration Factors for Crash Prediction Models with Consideration of Crash Recording Threshold Change. Empirical Bayes Before–After Study on Safety Effect of Narrow Pavement Widening Projects in Texas. Transferability and Calibration of Highway Safety Manual Performance Functions and Development of New Models for Urban Four-Lane Divided Roads in Riyadh, Saudi Arabia. Safety Analysis of Freeway Segments with Random Parameters. Strength of the Variable: Calculating and Evaluating Safety Performance Function Calibration Factors for the State of Ohio. Statistical Evaluation of Different Sample Sizes for Local Calibration Process in the Highway Safety Manual. Results and Lessons from Local Calibration Process of the Highway Safety Manual for the State of Maryland. Validation Technique Applied to Oregon Safety Performance Function Arterial Segment Models