Development of Discrete Size Measurement Methodologies for Motorcycle Helmets

FMVSS No. 218 defines the discrete size of a motorcycle helmet and requires it on the label; however, it does not specify how to measure the size. In addition, there is no standard procedure for determining the helmet positioning index (HPI) used to align the helmet on the headform for measurements and testing. This research developed procedures to determine HPI and to measure discrete size of motorcycle helmets. Four methods for measuring discrete size and one method for determining the HPI were developed and evaluated

Status of NHTSA\u2019s Roof Ejection Mitigation Research

NHTSA is continuing its exploration of roof ejection mitigation that began following NHTSA\u2019s issuance of Federal Motor Vehicle Safety Standard (FMVSS) No. 226, \u201cEjection Mitigation,\u201d which sets requirements to reduce the likelihood of complete and partial ejections of occupants through side windows during rollovers or side impact crashes. Three more platforms were identified for testing at NHTSA\u2019s Vehicle Research and Test Center. The Lincoln MKZ, which is a large outer slider with production and countermeasure Protec II panels, and prototype roof air curtain designs from Hyundai-Mobis and Autoliv

An Approach for the Selection and Description of Elements Used to Define Driving Scenarios \u2013 Part II

The primary goal of this research report is to study the elements and properties that may be used to describe driving scenarios. This report builds on previous research in which five scenarios were chosen from human driving data and various proposed behavioral competencies for automated driving systems. A preliminary list of elements and properties that may be used to uniquely describe the five driving scenarios was developed to help facilitate reproducible, repeatable, and traceable representation. The selected elements and their properties were focused on the ground truth scenario information. In this report six scenarios were selected from available driving databases, crash databases, and the behavioral competencies not covered in the previous research. These six scenarios were analyzed to consider expansion of the preliminary list of elements and properties that can be used to facilitate more complete descriptions of driving scenarios