SAE J2990:2019 pdf free

SAE J2990:2019 pdf free.Hybrid and EV First and Second Responder Recommended Practice
xEV identification is necessary to provide first and second responders with information to clearly, accurately, and reliably determine that a given vehicle encountered at an incident (collision, fire, water submersion, etc.) contains a high voltage system. Furthermore, the identification should be standardized, consistent, and reliable on exterior and/or interior locations on a passenger vehicle under 10000 pounds (4536 kg) GWWR where manufacturers will visually identify that a given vehicle is an xEV.
Finally, the identification should be clearly recognizable as an xEV badge by an approaching responder from a distance of 50 feet. When first responders arrive at a highway incident, they size up the vehicle as they approach the scene. This scan of the scene for clues is done from a moving vehicle, and having the lettering of a size to be read from 50 feet (15 m) allows for this to be visible without having to be in a close proximity to the vehicle. Specifically, for firefighters responding to a vehicle fire, a standard length of hose is 50 feet (15 m), and that is a common distance firefighters and fire apparatus stage from a burning vehicle while preparing to advance and suppress the fire. From“Fundamentals of Firefighter Skills” (Jones and Bartlett, page 638) it states,“Using the reach of the 1-3/4 inch hose, start approximately 50 feet from the car..” Uilizing this standard will allow for this information to be readily available to any responder approaching the scene, and not rely on it having to be restated by those who arrived earlier. NFPA 704，chapter 9, “Identification of Materials by Hazard Rating System,” specifies a 1 inch text height to legibly identify a hazard from a distance of 50 feet (15.2 m). This text height also appears to be a common height utilized today by OEMs in rear badging (see Appendix G). For these reasons, a 1 inch (25 mm) exterior badge height is expected, in most cases, to provide adequate information to a first or second responder approaching the vehicle. (Note: While NFPA 704 standard supported the derivation of the 1 inch character height, no other requirements from that document are implied to be required to comply with SAE J2990.)SAE J2990 pdf free download.