SAE J2944-2015
Operational Definitions of Driving Performance Measures and Statistics
- Standard No.
- SAE J2944-2015
- Release Date
- 2015
- Published By
- SAE - SAE International
- Status
- Replace By
- SAE J2944-2023
- Latest
- SAE J2944-2023
- Scope
- This Recommended Practice@ Operational Definitions of Driving Performance Measures and Statistics@ provides functional definitions of and guidance for performance measures and statistics concerned with driving on roadways. As a consequence@ measurements and statistics will be calculated and reported in a consistent manner in SAE and ISO standards@ journal articles proceedings papers@ technical reports@ and presentations so that the procedures and results can be more readily compared. Only measures and statistics pertaining to driver/vehicle responses that affect the lateral and longitudinal positioning of a road vehicle are currently provided in this document. Measures and statistics covering other aspects of driving performance may be included in future editions. For eye glance-related measures and statistics@ see SAE J2396 (Society of Automotive Engineers@ 2007) and ISO 15007-1 (International Standards Organization@ 2002). Applicable Vehicles This Recommended Practice applies to both left- and right-hand-drive wheeled vehicles having a steering control@ accelerator pedal@ and brake pedal. This document applies primarily to passenger vehicles@ heavy trucks@ and buses@ including articulated vehicles and vehicles towing trailers@ but may be useful for other types of vehicles. It applies to agricultural@ construction@ industrial@ and military vehicles when those vehicles are driven on roadways@ not off-road. Vehicles may be completely operated by a driver@ automatically driven@ or be operated by shared control. This document does not apply to two-wheeled@ three-wheeled@ and tracked vehicles to avoid complicating the specification of lane-related measures and because of the unique steering controls they may have. Road vehicles operated only by hand controls and not foot controls@ such as those driven by persons with physical disabilities@ are also excluded to avoid complicating the specification the response time measures. In addition@ measures in section 7 concerning reaction@ movement@ and response time for foot pedals are not applicable for vehicles with a clutch pedal. These measures for vehicles with clutch pedals were not included in this edition of J2944 to avoid delaying its publication. However@ measures in the rest of this document are applicable to vehicles with clutch pedals. Applicable Contexts This document is applicable to studies and tests of vehicles and drivers conducted on public and private traveled ways@ on test tracks@ or in driving simulators. All functional classes of highways and streets@ as defined by the American Association of State Highway and Transportation Officials (AASHTO@ 2011) Green Book@ chapter 1 are included to support naturalistic driving studies. Purpose The measures and statistics defined in this document are used to describe the lateral and longitudinal control of road vehicles as part of safety and/or usability evaluations of (1) driver distraction caused by in-vehicle information systems (e.g.@ navigation systems@ in-vehicle cell phones)@ (2) driver awareness and assistance systems (e.g.@ adaptive cruise control@ lane keeping assistance@ collision warning@ crash avoidance braking)@ (3) fitness to drive/licensing@ (4) drug and medication use by drivers@ (5) autonomous driving@ and (6) for other purposes. These measures and statistics appear in technical standards@ journal articles@ proceedings papers@ technical reports@ and presentations.
SAE J2944-2015 history
- 2023 SAE J2944-2023 Operational Definitions of Driving Performance Measures and Statistics
- 2015 SAE J2944-2015 Operational Definitions of Driving Performance Measures and Statistics
