A Safe System Approach Framework to Roadway Departure in the U.S.
The objective of this project is to develop a technical basis by which practitioners apply Safe System methodology to inform planning and design decisions to minimize roadway departure fatalities and serious injuries.
NCHRP Project 22-50: Crashworthiness of Roadside Hardware on Curbed Roadways
The objectives of this project are 1) to determine the effects of curbs on the crashworthiness of selected roadside safety hardware at various speeds, geometries, and offsets from the curb, 2) to develop guidelines for the use of roadside safety hardware in combination with curb, 3) to prepare the guidelines for incorporation into a future update of the AASHTO Roadside Design Guide, and 4) provide recommendations for any additional crash testing requirements that should be made to MASH on roadside safety hardware installed in combination with curb.
MASH Evaluation Training Development for the National Highway Institute
The objective of this project is to develop a course to help participants 1) perform evaluations using MASH guidelines and crash test data and 2) interpret crash test results to determine whether or not the hardware meets MASH performance criteria.
National In-Service Performance Evaluation Guidelines for Defining Acceptable Roadside Safety Hardware
The objective of this project is to develop ISPE guidelines to define and recommend nationally acceptable field performance criteria for roadside safety hardware based on the evaluation measures within NCHRP Research Report 1010.
NCHRP Project 20-123(16A): Roadmap for the Transformation to Computer Simulation-Based Assessment of Bridge Railings
The objectives of this study are to (1) evaluate the capability of existing numerical simulations tools in capturing the performance of bridge rails and rail transition systems and (2) develop a roadmap to implement using computer simulations for the compliance assessment of bridge rails and rail transition systems.
MASH Evaluation of MaineDOT’s Approach Guardrail Transition Designs using Finite Element Analysis
The objective of this project is to evaluate the crash performance of three MEDOT Approach Guardrail Transition (AGT) designs under MASH TL-3 impact conditions and performance criteria using finite element analysis. The subject designs include:
1) 3-bar concrete transition barrier with a transition curb.
2) 4-bar concrete transition barrier with a taper added to the nose on sidewalk (modified design).
3) 4-bar steel transition on sidewalk.
NCHRP Project 22-63: Verification and Validation Guidelines to Use Computer Simulation as an Alternative to Full-scale Crash Testing
The objectives of this study are to: (1) establish a standardized confidence-level based process to verify and validate computer simulations of roadside safety devices across the different roadside safety hardware categories and test levels, and (2) design a uniform reporting template for detailing the inputs and outputs of the computer models used.
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