Electric and hybrid vehicles driving at low speeds are so quiet they can pose a danger to sight-impaired pedestrians crossing the street. In this episode of SAE Eye on Engineering, Senior Editor Lindsay Brooke looks at the U.S. government’s plans to require electrified vehicles to emit a warning sound when traveling at less than 18 mph (29 km/h). SAE Eye on Engineering can be viewed at https://youtu.be/NDjXEhHMAZo. It also airs in audio-only form Monday mornings on WJR 760 AM Detroit's Paul W. Smith Show. Access archived episodes of SAE Eye on Engineering at www.sae.org/magazines/podcasts.