Ejection impactor means a device specified in S7.1 of this standard that is a component of the ejection mitigation test device and is the moving mass that strikes the ejection mitigation countermeasure.
Ejection impactor targeting point means the intersection of the y-axis of the ejection headform and the outer surface of the ejection headform.
Ejection mitigation countermeasure means a device or devices, except seat belts, integrated into the vehicle that reduce the likelihood of occupant ejection through a side window opening, and that requires no action by the occupant for activation.
Ejection propulsion mechanism means a device that is a component of the ejection mitigation test device consisting of a mechanism capable of propelling the ejection impactor and constraining it to move along its axis or shaft.
Limited-line manufacturer means a manufacturer that sells three or fewer carlines, as that term is defined in 49 CFR 583.4 , in the United States during a production year.
Modified roof means the replacement roof on a motor vehicle whose original roof has been removed, in part or in total, or a roof that has to be built over the occupant compartment in vehicles that did not have an original roof over the occupant compartment.
Movable window means a daylight opening composed of glazing designed to be moved with respect to the vehicle or frame while the vehicle is in motion.
Side daylight opening means, other than a door opening, the locus of all points where a horizontal line, perpendicular to the vehicle vertical longitudinal plane, is tangent to the periphery of the opening. The periphery includes surfaces 100 millimeters inboard of the inside surface of the window glazing and 25 mm outboard of the outside surface of the side glazing. The periphery excludes the following: any flexible gasket material or weather stripping used to create a waterproof seal between the glazing or door and the vehicle interior; grab handles used to facilitate occupant egress and ingress; and any part of a seat.
Small manufacturer means an original vehicle manufacturer that produces or assembles fewer than 5,000 vehicles annually for sale in the United States.
Target means the x-z plane projection of the ejection headform face as shown in Figure 1.
Walk-in van means a special cargo/mail delivery vehicle that only has a driver designated seating position. The vehicle has a sliding (or folding) side door and a roof clearance that enables a person of medium stature to enter the passenger compartment area in an up-right position.
Zero displacement plane means, a vertical plane parallel to the vehicle longitudinal centerline and tangent to the most outboard surface of the ejection headform when the headform is aligned with an impact target location and just touching the inside surface of a window covering the side daylight opening.
Table 1-Priority List of Target Distance To Be Checked Against Limits
Step | Measure distance from z axis to z axis and x axis to x axis for these targets | Eliminate this target if distances between z axes of targets and x axes of targets are less than 135 mm and 170 mm, respectively |
1 | Upper Secondary to Lower Secondary | Upper Secondary. |
2 | Upper Primary to Upper or Remaining Secondary | Upper or Remaining Secondary. |
3 | Lower Primary to Lower or Remaining Secondary | Lower or Remaining Secondary. |
4 | Upper Primary to Lower Primary | Upper Primary. |
49 C.F.R. §571.226